Top Definition
When you are kissing someone then they put there whole mouth around yours and blow air into it, causing their mouth to blow up like a bullfrog.
Guy one: Man I just bullfrogged her!
Girl that got bullfrogged: What the f*** just happened to me!
by That Girl Next Door <3 October 25, 2011
1 more definition
This is when a male or female is fucked by or is fucking someone twice there weight.
Jimmy got bull frogged by Suzy last night.

Tim weighs 160lbs and had sex with Jan, she weighs 80lbs, o my god she got bull frogged.
by bullfrogged September 12, 2009

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