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2.
to have sex with a woman.
I went bullfroggin last night. Man I fucked that bitch hard!
by 4Q2pal October 25, 2007
 
1.
The act of banging your enemies mother whilst eating out his sister. Usually performed against losers who suck at call of duty.
Hey dumbass I quick scoped you just like I was bullfroggin your mom and sister last night.
by master sgt. poonslay March 11, 2014