Trench balls

Sweat that pools in your underwear under your balls subsequently causing your balls to wrinkle and then dry out and crack.

Trenchball was originally for soldiers in trench warfare. It’s the act of two “heterosexual” men engaging in sexual acts within trenches, as there were no women around to help any urges that might distract the soldiers and impair them in battle.

However, now it’s used to explain why two “straight” guys are fucking