DEFINITION: Oh my God, check him out, he's HOT! (used in gay context)
COMMON USE: When you see a hot guy and you want your friends to check him out without the guy knowing, you say "O'ka!" And they look at the direction you were looking. If they agree, they respond with "Trust!", and if not, they say "NO'ka", meaning "NOT O'ka".
OTHER DEVIATIONS: FO'ka (female O'ka... when a gay guy finds a female to be attractive)
Todd: 9 o'clock.
Dean: *gay inhale* TRUST! He is fizzine!