Mississippi Lawnmower
Whilst having intercourse in missionary position, the male or female penetrating forcefully rips out the receiving ends pubs, causing blood to drip down toward their vagina, they are usually screaming in pain. The penetrator rubs their fellatio in the blood and reinserts it. The act is usually done on siblings.
"aye man my sister and I tried the Mississippi lawnmower last night, it was amazingly rough."