During a segment talking about the biggest health stories of the day, Phillip, 59, felt his jaw hit the floor when he was told there had been a big rise in snapped penis injuries.
Phillip and co-host Holly Willoughby, 38 welcomed in Dr Sara Kayat in for a chat about the latest health issues.
Holly brought up the next topic of conversation - the sudden rise in snapped penises - which caused Phil to wince.
When a penis is broken or snapped, it’s because of the sheath around the soft tissue that pops.
"When a penis is broken or snapped, it’s because of the sheath around the soft tissue that pops," Dr Sara explained.
"It makes a physical popping noise – and it becomes quite painful… excruciatingly painful in fact, and swollen."
Phil couldn't quite believe his ears and asked "how can it break?!" with an exasperated look on his face.
Dr Sara then explained that the rise in the use of Viagra might be something to do with the painful-sounding condition.
Holly then read from her factsheet: "It happens when a penis hits a hard object..."
"What the hell are they hitting it on?" Phil shouted, before looking at the screen and telling viewers: "You be careful!"
Viewers were in shock and disbelief at the discussion topic.
One asked: "How the hell can a penis snap?"
"It'll be a while before a snapped penis rises again," another joked.