Definitions by Beztheowl

Sportsman's Willy 

The phenomenon of shrinkage apparent in the male genitalia during and immediately after participation in physical (usually sporting) activities.

“Bloody hell Brian, you’ve got a knob like a pre-pubescent schoolkid! What's going on?”

"Oh don’t worry about that, I’ve just got back from a 5 mile jog and I’ve got a proper Sportsman's Willy”

Sportsman's Willy by Beztheowl July 29, 2009