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2. Buck Double
During sex, when a man and a woman share a double sided dildo, thus simultaneously penetrating the anus of both individuals during vaginal intercourse.
I had a Buck Double last night. It wasn't at all what I expected, and I can't believe they actually advertise it in public.
1. Buck Double
Getting pounded so deep that the testicles enter the anus
"Dude, Greg was deeper than deep, he was so deep that he gave her the Buck Double"
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