My girlfriend's oldest son was playing a game of road hockey a few winters back and after he came in the house, began to experience a lot of pain, scrotewise.

Rushed him to Emerg to see the on-call doc, who informed him he had suffered a torsion of the testicle. The boy was wearing boxers while playing and the doctor laid the blame there... not enough support.

She manipulated his nut back into the proper alignment (pretty good for not being an owner/operator) and advised a couple days of "taking it easy". He was in way too much pain to be titillated by the reality of the young attractive lady doctor being so attentive to his junk.

He now wears boxer briefs.

So do I.