OB

Ob is short for 'OBviously'.

Person A: "You want to go get some of that pu-tang?"
You: "OB!"

by J master flex November 02, 2005

act

Act is short for ACTually. It is only used in the indirect questionative form, meaning it is only used to question something someone says but not really looking for an answer.

Person A: Yo that fly hunnies diggin` yo phat ride!
You: ACT?

Just like saying "Really?".

by J master flex November 02, 2005