Most of us will probably pile on a few pounds over the festive season.

But hopefully nobody will turn into 46st Georgie Godwin, the star of Caroline Ahernes new comedy, The Fattest Man In Britain. Timothy Spall plays Georgie, with the aid of a special silicone fat suit.

But what is it like to be that fat?

Mirror man Steve Myall, a trim 12st, borrowed Tims suit, made by MillenniumFX, complete with moobs and jumbo sausage fingers, and waddled on to the streets to find out. Talk about being a glutton for punishment...

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BARBERS

If Im going to spend the day as an overweight man I might as well try to look lean and mean up top so the first thing I do is head down to the barbers.

Staff look on open-mouthed as I stagger in and one customer remarks: Too many burgers, young man.

Well, Im at the barbers you come to expect cutting wit like that.

When it eventually comes to my turn I have to ask for the seat to be lowered and swung towards me as I am unable to squeeze through the gap.

Not the best of starts. And I can feel myself starting to sweat ever so slightly, despite the wintry conditions.

After a short back and sides, I ease myself out of the seat and almost topple over. People are gawping. Youd think theyd never seen a fat bloke before.

BAKERS

I need cheering up so I pop into the bakery for a snack. At the counter I plump (quite literally) for a couple of chicken pasties.

Outside I struggle to hold the piping hot snacks in my podgy fingers and nearly squash them.

A group of mums look on sniggering and I hear one say: Look at that fat b*****d.

Lisa Ray, 20, tells me: If I was as fat as you Id shoot myself. You look disgusting. People like you shouldnt be allowed to eat fatty foods.

Im beginning to lose my appetite.

Her friend Carly Middleton, 19, agrees: I dont know how people let themselves get so big. If you are fat, stop eating.

If I was this big in real life Id stick to pizza deliveries. I couldnt face people judging me every time I went out to buy some grub.

I shuffle shamefully away and force down the pasties out of sight with a heavy heart even my internal organs seem to be getting fatter.

CLOTHES SHOP

Dressed in a pair of trousers with an 85in waist, a shirt with a 50in chest, and a raincoat which could double as a six-man tent, I look like a giant flasher.

Time for a trendy makeover. I visit Vanquish menswear for some designer clobber and the owner assures me hell be able to find something suitable.

I soon discover that designer jeans only go up to size 38 and I would need at least two pairs stitched together to cover my enormous backside. Ill pass, thanks.

The assistant couldnt find a tape measure big enough to fit around my waist but asked me to leave my number so he could source some from America where theyre more used to seeing people my size.

I trudge out of the shop in my flashers mac feeling even more like a social outcast than ever.

THE GYM

Feeling desperately sorry for myself and shunned by modern society, I take a deep breath and hit the gym.

Inside, Adam the instructor, says hes seen lots of overweight people trying to get fit but admits that Im his biggest yet.

I start off by sitting on a Swiss ball but I dont feel at all comfortable on it Im worried that it might burst at any moment.

Next up is a few squat thrusts but its not easy with the fat suit and soon I am pouring with sweat and feeling dizzy.

I ask if I would be able to join and the answer is yes provided I get a letter from my doctor saying it is safe for me to exercise.

Adam says: To be honest if you let yourself get that size you cant be very health-conscious, can you?

Harsh comments indeed but probably fair enough. If only I was thick-skinned.

FURNITURE

In the ITV1 drama, Georgie Godwin spends a lot of time sitting in his front room but this is not as easy as it looks.

I plop myself into an Ikea armchair but rolls of flab spill over the side and reading the Mirror is a total nightmare.

I stretch out on a sofa but the weight of my chest pushing down on my lungs makes it hard to take a breath and even harder to move position.

It takes ages to get up but when I do I try out a king-size bed in another shop. I take up nearly all of the mattress and need four pillows to

see over my stomach. Its the most comfortable Ive felt all day but it doesnt last. Im told I need one that is specially reinforced and it costs an extra s1,500. I need a lie-down.

DOWN THE PUB 

I head to the pub to drown my sorrows and a group of girls glance over. I decide to take the plunge and approach them. To my delight, they want a quick grope though sadly of my arms and belly.

Louise Griffin, 21, a beauty student, says: I dont fancy you. I was looking at you as its unusual to see someone so big out. I think they must stay in all the time.

Her friend Julie Telford chips in: I couldnt handle people staring all the time if I was with you. Its sad to see you. I wouldnt normally expect someone this big to chat up girls. Theyd be sat in the corner on their own. If you asked for my number Id make sure the digits were mixed up.

To cheer myself up I order burger and chips, twice. One old man says: Go on big fella, dont let them girls upset you. Its meant to be comfort food but its not working. I eat one chip and order a taxi home.

Im experienced enough to realise I wont fit in a conventional-sized cab so I request one with disabled access. When it arrives the driver smiles: I move some big lads around but you are massive.

The seatbelt wont stretch over my huge bulk so I go unbuckled. Hopefully my body suit will cushion me if theres a crash.

The taxi arrives safely and indoors I get ready to strip off. The relief is immense the long weight is over.

The Fattest Man in Britain is on ITV1, Sunday, 9pm.