Green’s Dictionary of Slang

1. faeces, excrement.

2001		S. King Dreamcatcher 205: He covered it with snow, like a dog covering its own scat.
2003		Mad mag. Oct. n.p.: Look at all the berries in this coyote scat.
2019		P. Baker Fabulosa 297/2: scat faeces.

2. scatology, defecation for sexual purposes.

1986–7		Maledicta IX 161: Now we come to scat.
1993		J. Green It 194: I'm not into scat. Shit. Some people are, but I’ve always termed scat ‘the final frontier’, the last taboo of one's sexuality.
1994		G. Indiana Rent Boy 76: Scat is another thing I thought was really freaky the first time, watching this Siegfried blond out of a GQ spread chowing down one of my bowel movements.
2003		K. Cage Gayle.