Thanks to Drexle, I've been sucked into moo parlance. For future reference, here's my current moo-induced lexicon:
moo = word (as in "moo to your mother")
moo? = what?
moo! = I take umbrage, sir!
mOo = *surprise*
moops = oops
mo = yo (as in "Where you been, mo?")
Thank you for your time.
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I ate a hooker half a bottle of knife.