What a member of a group would say to suggest that some behavior is the group style, or that it's the way they usually do things. Usually
said with
anything from excitement to modesty, it is the response for
anything from a compliment to disgust to total disbelief.
Was that you guys last night,
outside the police station?
You know it.
Dude that's AWESOME/messed up/brutal/so fucking
sweet.
Hey man; you know how we do.