Noun: Refers to an acquaintance, FaceBook friend, classmate, work associate, indirect friend, (e.g. a good friend's friend), or any individual not quite within the realm of closeness required to be deemed a "real" friend.
Coined from the "sup dude" slurred toward supdudes when passing by since there is simply no other interaction or common experience worth sharing.
*Supdude is a completely subjective term such as "friend" or "brother." A supdude to one could be a friend to another.
"How was the party?
"It sucked it was just me and a bunch of supdudes."
"Who invited all the fucking supdudes?"
"Is that your friend or just some supdude?"
a name given to a person of whom knows you but you can't recall his name to save your life. portmanteau of What's Up + Dude.
SupDude: Hey Hey Hey Mike!
Amanda:Who was that?