Comic Michael McIntyre was shamed into slimming after being branded overweight by his son's computer.
The star told chat show host Graham Norton about the moment he decided to diet.
"My son has an app called Akinator the Genie that guesses the famous people you're thinking of by asking questions," he said.
"It started asking 'Is it a man?' and 'Is he American?' and narrowed it down to a British comedian with dark hair. And then it asks 'Is he overweight?' so I took a breath and put in 'Yes' and it said 'Is it Michael McIntyre?' I haven't eaten since then."