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1.
The eating of the ass.

Synonym: Tossing Salad
Damn, Barret Long gives some killer buttdome.
by afromthegay January 20, 2008
 
2.
The act of a woman performing oral sex on a man using her ass cheeks.
Dude, I hear that wicked poopy chick gives some mad butt dome.
by SexSarge69 January 20, 2009