My DS, who turned 5 last week, got out of the shower this morning and his foreskin was swollen. I've heard many claim that the foreskin, being such thin, stretchy and sensitive tissue, can swell up just like the lips, but I'd never actually seen it. Well, talk about swelling! He just thought it was funny :LOL , and I really wasn't too concerned either as it didn't look red or inflamed in any way...just REALLY puffy. About three times the normal size.
Anyway, this evening he joined his sister in the tub, and as he was getting out, I noticed that it was completely back to normal.
I chock it up to a little over-aggressive handling