The entomology comes from the act of splitting, i.e. one thing being diverted or cut into two different directions or entities and the chewy, i.e. that which has been eaten or chewed.
After eating that old potato salad, I spent the night rotating from face up to face down at the toilet, That crap made me split the chewy
1. damn, your room is chewed the fuck up
2. chile, your head looks chewed the fuck up
3. bitch, them toes is chewed the fuck up
4. that frontal is definitely chewed the fuck up
When you pull out and bust a fat nut in a chick's face and then force her to apologize for getting in your way.
The Dick Cheney:
Girl: "Oh my God, you shot a hot load all over my face. Jesus..."
Guy: "Hey bitch, fuck you. Apologize for getting in the way of that badass statue on my table."
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.