When a man ejaculates onto an inanimate object, which somehow finds it's way into a woman's vagina, and the woman becomes pregnant.
"The cheerios say you're the father"

"What?"

"Yeah, second-hand fuck is a bitch"
by Yarchonis March 26, 2009
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When you fuck someone that's fucked someone else, you second hand fucked them
Also know as a Grade-A power move
I second hand fucked Dylan because i fucked his girlfriend last night.
by Deafblackkids March 5, 2020
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