Slang word for male genitalia.
Relatively new.
Can be used sexually and nonsexually.
A: I've got a big gain
B: I'm a guy, I got a gain
A progress in gaining muscle or weight at the gym. Lifting heavy weight, and eating the right meals after working out causing you to get gains
"My gym bro has been getting gains at the gym recently"
Someone that gained a large amount of mass
Man 1: “Gavin used to be really skinny but he’s gotten really big since the last time I saw him”
Man2: “I know right he’s like the definition of gains”
When two or more bros are in a testosterone-fueled activity, much like accidental anal, and unintentionally end up having an extremely satisfying and fulfilling workout.
Bro, you got some mad accidental gains from that dutch rudder you gave me yesterday.