"Sup" from contraction of "What is up?". "Man" used in brotherly sense, as in "homie".
Term used in same situations as "What's up?" but shorter and cooler.
1. Sup man?
2. Sup man?
Originally from fumes eminating from the mouth as a result of felatio. Later to include various "flavours of penis" and the aroma thereof.
1. Hey, Julie has penis breath!
2. Oh yeah, well you have Mentos Penis Breath.
3. ... or Tic-Tac Penis Breath.
4. I don't get penis breath... I give it.