Sharleen Spiteri has revealed the 'worst thing' she's ever done in a bid to get back at a rude customer who made her young colleague cry.

Before shooting to stardom as part of Texas, Sharleen, 55, worked at the Irvine Rusk salon in Glasgow. Speaking to Martin Compston and Gordon Smart on the Restless Natives podcast, the Scots singer recalled the grotesque incident as she helped her co-worker get revenge.

She explained to Martin and Gordon that there was one shop regular who would always demand that a member of staff fetched her a tuna roll from a nearby sandwich shop. Sharleen told how she once chewed the tuna and spat it back out into the roll before serving it to the woman.

She said on the podcast: "I know the worst thing I have ever done. When I was a hairdresser there was this woman that used to come in on a Saturday morning as soon as the doors opened.

"She must have been about late fifties or early sixties and she was a pain in the a**e. She was horrible to everybody. This new junior had just started and she made her cry so I said 'Listen, let me show a trick that will make you feel better.'"

Member of the Scottish band Texas, Sharleen Spiteri, sings on the stage of the Nice's Jazz Festival on July 10, 2012 in Nice, southern France. AFP PHOTO / VALERY HACHE (Photo credit should read VALERY HACHE/AFP/GettyImages)
Alternative rock band Texas were formed in Glasgow by Johnny McElhone (who was also a member of Altered Images from earlier in the list) and Sharleen Spiteri. They smashed right out of the gate with their hit 'I Don't Want a Lover' and critically acclaimed debut album Southside, and continued to see success in the 90s with albums such as White on Blonde and The Hush.

She continued: "The woman would always send somebody across the road to get her a tuna roll. So when the girl brought the roll back I put a big bit of tuna in my mouth, chewed it and spat it right back into the roll.

"I cut it for her, took it back up the stairs and watched her eat it. So never, ever be mean to anybody, she made this young girl cry."

"My name's not Spiteri for nothing," she quipped.

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