Plbt is the noise one makes when they stick out their tongue and blow. go ahead try saying it. It's a rough estimate but it works for the quick response to a stupid comment someone may make on AIM. All credit goes to one stunningly beautiful brunette who is addicted to AIM and has no better purpose in life.
aaronthebomb88: I'm better than you.
by Stunningly Beautiful Brunette May 17, 2005