Look at all the flat dogs on the riverbank.

The Zambezi is infested with flatties.
by George McBob May 11, 2009
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When a meat-head or bro tackles a smaller person so that he can violently rub his head on their head. The purpose of the flat dog may be homoerotic in nature.
Sean, stop flat dogging Kyle. He's about to cry and you have a Texas-sized erection.
by JeffGoldblum May 19, 2011
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It's like having sex doggy style, but the girl is laying flat on her stomach.
Yo man I was just flat dogging my girl and my dick got in so deep!
by Flat_dogging March 30, 2016
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