Short for "permanent period" - usually in reference to one's whose demeanor has a somewhat heavy flow and needs a both a tampon AND a pad, just in case
"Looks like Sheila is your moon sister"
"She's always on her period"
"You mean permeriod?"
Acronym for anonymous hook-up site "Online Booty Call".
"Jesus Christ, we'll never get any work done around here if Jeff just sits on OBC all day"
Short for "Totally Cock-Blocking". Often funnier when used in scenarios when misunderstood by one party for the more common "Taking care of business" abbreviation.
I so would have closed that deal, but Matt was TCB
y'know, like a wizard who knows about radians
"Robie is being such a wiznerd right now, he fixed my computer and wouldn't stop talking about complex IT parlance"