BG

you know how you play "slug bug what color" when your extremely bored or if you just want to hit your friend, BG is a similar game in which you most commonly use in church to identify a BG or Bald Guy them following with a punch to the shoulder toward his friend.
Other words may be:
FG- Fat Guy
UG- Ugly Guy
SG- Stupid Guy
RG- Retarded Guy
HG- Hairy Guy
MG - Mutated Guy

and so on

person 1:BG (following with a punch toward his friend)
person 2:WHAT THE HECK!??

(yes i'm from Utah)