This term is used when a man with a large penis has sex, either anal or vaginal, with someone else and his penis actually can be seen poking out the stomach or the person can feel that big member in their stomach. It could also mean that you are being penetrated really deeply.
I was with Sarah last night and I was stabbin' them guts.
Hoes like it when you be stabbin' them guts.
by Thotcrates September 25, 2016
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