Top Definition
1) For a male to pry open a woman's mouth and perform intercourse with her mouth without any struggle; referring to the popular internet video of a chimpanzee using the mouth of a frog for sexual gratification.

2) To be taken advantage of .
1) My girlfriend was so tired last night, I decided to just monkeyfrog her and call it a night.
by geekpower November 09, 2010
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