Original Mosh Starters known for stepping into any club/rave/bar/alley and creating moshes that eventually turn into riots.
Tell security that O.M.S are not aloud in tonight because there liable to goin too sick.
(Open Mouth Syndrome) This is when the person you are currently making out with uses excess amounts of tongue, spit, and or slobber.
Friend: How was she last night?
Friend 2: Dude, total O.M.S. Pretty much terrible.
Friend: Oh know, that bad?
Friend 2: I needed an entire beach towel to dry my face off afterwards.