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the glorious occasion when a female dentist/dental assistant leans on you to see the other side of your mouth, therefore resting her boobs on or against your head. This action is better received when she's at least semi-attractive.
Johnny's dentist appointments were usually dull, but he still hoped for some sweet dentiboob action.

Tom: Dude, it sucks that you have to go to the dentist today.
Mark: Nah, it's cool--if I'm lucky, I'll get me some dentiboobs.
by Mufasa Hardcore July 24, 2010
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