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The bigmac slap is where you get a morbidly obese person to eat 5 Bigmacs and then to slap his man tits continuously on a womans face.
Dude, I saw this huge motherfucker last night. I hit him up for Mcdonalds and had a wonderful night of Bigmac slaps.
by July 24, 2009
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When a fat man is doing a girl from behind he lifts his belly up and slaps it on the females back
I couldn’t believe it bro, not only did she let me smash, she let me Big Mac Slap my fat gut on her back
by Bigmacslapdaddy July 03, 2018
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