Short for obsessing. There's also sessed and sess. You might say this about a celebrity, crush, or overall hyperfixiation
"I'm totally Sessing over Cavetown"
A groups of guys all from Atlanta beating eachother up in Atlanta
Yo, we about to have an Atlanta Beating Sess tomorrow.
guy 1: dude that party was crackalackin'!
guy 2: sess naw! I wanted to go, but had to work.
another word for saying welfare/debit card
"girl let me check my macsess card, so I can get some food up in here."
"Did you get your mac-sess benefits yet"
A girl who once had potential at grammar school and was above taking drugs, now will suck dick if md is good