Butt Smarm (but SmARm), n. Butt smarm can be made by those things of both male, and females alike. But there needs to be one male paricipant. It's the manufacturing liquid, or rectal afterbirth, of intercourse (place vairied) involving A. an anus, and B. a Penis. Butt smarm itself is a fluid that consist of: 1. Lubricant 2. Blood 3. Crap 4. Semen.