Someone who is continually acting like they have peanutbutter on the roof of their mouth. Like when you put peanut butter in a dogs mouth and they keep trying to lick it off with their tongue. Common in people who are unable to make a timely decision.
Hey peanut butter lips.

Look at peanut butter lips.

Make up your mind, peanut butter lips!
by James McLellan October 5, 2006
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