basically means something or someone is grimy could also apply to your performance
"Did you get a chance to talk to that girl over there?"
"Yeah, turns out she was really salami."
"Damn."
"Dude, I was so salami on the court today."
"Yeah bro, you missed seven shots in a row."
Describes people/things that are sloppy, gross, sleazy, bad, etc
"Who's that guy over there? He looks so salami"
"Oh that guy? That's Brett."
"Damn, someone should NOT mink him out."
"Rock."