An object used by males when masturbating; the male rubs his cock and balls up and down on the pillow until he jacks off all over it

where you put your head after a long day

Another word for booty or a large butt. Your pillow is used to support your body while sitting down.

Someone who has no backbone or gonads, totally unable to think for himself and therefore takes direction from someone else. Thus, he is a pillow and bares the imprint of the last ass that sat on him..

n. A rectangular cloth bag stuffed with feathers, foam rubber, or other soft materials, used to support the head when lying down.
v. Rest (one's head) as if on a pillow.
(OED)

ed. - Also a brilliant tool to engage in friendly fights in. Honestly, people.

fat sack of any drug

Pillow, a word used for someone that is 'uncool' or 'moist'