Piff is a word used to describe someone who is that of an underdog. Someone who is always there for when thepopular people come crashing down, but is not exactly popular themselves.
"yo my nigga lopez!"
"wats good nigga?"
"yo i got that piff nigga!"
"word???" "o shit let me throw down and get me high."
puff puff "damn that" (cough) "good piff"