Pertaining to a situation when you are hot and heavy with a significant other and your fingers are "Knuckledeep" in their anal or vaginal opening
She was laid out on the bed and i was knuckledeep in her vagina when her sister walked in.
by Charles Penguin March 04, 2008
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To walk around with your hands in your pants ( typically accompanied by a disability & a strong odor )
" I don't want baylor touchin' my food .motherfucker smelling like a knuckledeep "
by Tilly baylor November 17, 2021
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