To stop doing something.
Look Love Albatross, we've been going for four hours now. I've come seven times. Can't we just knock it on the head?
by The_Strut October 21, 2004

i was driving taxi this passenegr asked me take him to a "knock shop" i curiously asked again and he said brothel whore house
by raj February 7, 2005

by abfdteacher January 14, 2010

by The Return of Light Joker May 19, 2008

by Soice Feos November 8, 2010

getting head (male.) the 'glottis' is the back of your soft pallet and the entrance to the throat, and 'glottal' is the adjectival form.
by eepah October 2, 2009

(v) To have sexual intercourse. The knock refers to the man's hips hitting the woman's ass, which produces a slapping sound. The motion literally knocks her boots (buttocks).
"Bring your friend, I likes you two's I'll knock the boots, the sneakers and the house shoes." - Digital Underground (Flowing on the D-line)
by Stoic Seraph April 14, 2003
