1) A ring-shaped pillow used to elevate one's ass from a sitting surface, usually to promote rapid healing of a injury on the posterior
2) A tall skinny bastard/bitch who does nothing but spew chunky diarrhea out of his/her gaping noisehole. (See also assclown
1) I forgot my asspillow, and my hemerroid popped when I sat on your couch.
2) Shut the hell up, you asspillow!