Abbreviation for "I possibly have genital herpes." Can be serious or used as an excuse to not sleep with a less desirable mate.
Buddy: "Dude please tell me you stayed away from Sophie"
Victim: "She tried her best, but I told her I poss got the gen herps and problem solved"
"Poss got the gen herps, 'sults in 'morrow"
"Told you not to get with Sophie"