nooky(n = noun.act) ass, fuck, fucking, nookie, piece of ass, piece of tail, roll in the hay, screw, screwing, shag, shtup - slang for sexual intercourse;
is a kind of carnal knowledge, coition, coitus, congress, copulation, intercourse, relation, sex act, sexual congress, sexual intercourse, sexual relation

nooky, n. (also nookie) sl. sexual intercourse.

Etymology:
20th c.: perh. f. NOOK