A suss pass is used when you can (for one time only) say something that sounds hella gay.
Random Nigga 1: Yo I just pumped this nigga from behind!
Random Nigga 2: YO WHAT THE HELL. NIGGA U GAY.
Random Nigga 1: ...
Random Nigga 2:AND HE DIDN'T SAY PAUSE.
Random Nigga 1: Don't worry I have a suss pass.