To get serious.

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

Large Biceps

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 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