To get serious.

Big arm muscles, i.e. big biceps AND triceps.

a word to describe someone who is overweight or just flat out big. sometimes used to describe old man can be used teasingly or as an insult

Large Biceps

Large Breasts on a female, Not used for male breasts manboobs

1. noun; someone who is or appears to be a larger person whether it be in hight, weight, or both. Might also refer to a person who is the groups 'bitch.' Ref. example 1, 2 & 3

2. verb; an act of doing something stupid or idiotic. Ref. example 4