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3.
When a wet butt hole breathes and loosens up before it is fucked.

When the hole is so relaxed it is open for fucking
Will you please pucker your butt so I can insert myself into it? ;)
by Timothy Tool July 11, 2004
 
1.
Something so thrilling that you feel it in the pit of your stomach and your anus puckers up, too.
Have you ever gone skydiving? It's a real buttpucker!
by Mica M November 21, 2007
 
2.
an extreme tight ass, excessively anal
You have so much butt pucker you might suck yourself in.
by babblepfish September 28, 2006