Laptops have always been a hot item but a 50-year-old scientist didn't realise just how much until he burned his *****.
The previously healthy father of two remembered feeling a burning sensation after he had been writing a report at home for about an hour with the computer on his lap.
He noticed a redness and irritation the following day but it wasn't until he was examined by a doctor that he realised how much damage had been done.
"The ventral part of his scrotal skin had turned red, and there was a blister with a diameter of about two centimetres (0.8 inches)," Claes-Gorn Ostenson, of the Karolinska Institute in Sweden, wrote in a letter published in The Lancet medical journal on Friday.