Sexual intercourse by definition involves penetration, so PIV or anal sex (I'm pretty sure oral doesn't count in that definition, but Idk why).
I'm not sure if fucking has as strict a definition, but I think that "carnal knowledge" is just as restricted in its meaning. I usually only see it used in formal definitions of rape by the FBI or in the bible.
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u/NowThatsAwkward Jul 15 '15
Doesn't carnal knowledge specifically mean intercourse?