A student lost his nipples after he was dared to squirt two cans of body spray on them, causing the body parts to fall off.
The boy, who was not named, was in his school changing room when someone challenged him to empty two cans onto his exposed chest.
Immediately afterwards someone flicked his nipples, causing them to pop off.
He said: “At first it's just cold. It's not really a big thing. And then it starts to burn and you're just there waiting for it to finish.
"It was fine, it was all fine. Then the boy who was actually freezing my nipples, he flicked both my nipples. And that's when the nipples fell off.
"Have you ever seen a wart? It was exactly like that. It hurt. It was like raw, exposed skin.”
The University of Liverpool student lost his nipples as a 15-year-old schoolboy and went to his next lesson as if nothing had happened.
He added: “I’'m in German, just sitting, and my nipples are now gone. I'm just chilling, and then people are like, 'Your shirt is bleeding'.
"And you just see two blood stains from both my nipples.
"My German teacher actually stopped the lesson and was like, 'What's going on? Do you need to go to the medical room?', and I was like, 'Nah it's fine'."
He added people usually react with disbelief when he reveals his lack of nipples, although most people end up laughing - including his first girlfriend.
Although he urged people to be cautious if they decided to copy him, he added he has no regrets and would do it again if he could go back in time.
He told the uniofliverpoolmemepage on Instagram : “I put myself in this position because I accepted the dare.
"Now that I look back on it, it's just like, it's stupid, it happened. Now I've got no nipples."