Acronym for Big in the Game.
Signifying that someone or something is of great importance in a certain field.
Used in written form only.
"Ronaldo is BITG!"

"That guy gets so many chicks, he's BITG."
by dufferdown May 19, 2009
B.I.T.G – ‘Back In The Game’ – The immediate recovery of a person after going DTD, prompted by the consumption of some fast food!
Mate, Aldo is 'BITG' after that dirty burger! ("where's my pint" or "pass the bifta")
by QuickBuck February 3, 2008