Top definition
Strange creature from Star Wars IV A New Hope. Bum Mouth obviously has a Bum Shaped mouth, and gets angry at luke skywalker in the Cantina.

Also, an asshole. Literally.
Man that ass is such a bum mouth
or

Kiss me Leia, I want your saliva to run all through the cracks of my Bum Mouth.

I need to lick a good Bum Mouth.

Do you really want to french kiss that Bum Mouth?

I really love you Bum Mouth, and I love to rub my tongue through your poopy crack.
by Arty Sims December 28, 2008
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