Top definition
That guy who you see all the time, but either don't remember his name, or haven't ever really been introduced to this guy, but you see him often.
Your walking home at 5 and you see that guy who lives in C4.

As your walking past you say, "whats up dude."

tha-wassupdude: (head node),"sup."
by guppietoe November 12, 2009
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