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A particular song that one sings under one's breath in any awkward situation. Primarily gives said person an excuse not to talk.
Guy 1: So anyway dude, I hooked up with this girl called Clara last night. She was kind of fat and ugly and a bit of a tramp, but a really good lay nonetheless
Guy 2: Dude that was my sister!
Guy 3: *pause* Yummy yummy yummy I've got love in my tummy and I feel like loving you
Guy 2: What's he singing?
Guy 1: Yummy yummy yummy. It's his Go-to Song.
by Blargle Margle February 06, 2011
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