look up any word, like thot:
 
1.
top notch ( used in shrophire by most bowlers)
(1) cock on lad, cock on
(2)that was a cock on shag !
by tag and payney June 18, 2006
 
2.
When something is exactly right.
John: What do you think the score is?

Joe: Guesses the correct score

John: Cock on

Other similar expressions: bang on, dead right, spot on
Opposite of cock up.
by blizzard July 07, 2013
 
3.
1) An exclamatory term used to express the feeling one experiences after having fully satisfying sexual intercourse.

2) Expression used when someone has sex with a particular partner who is so fucking awesome that they keep wanting more.

3) A substitute form of the expression "Rock On" used regarding sex.
Omg, Ronny and I had sex last night and the only words I was left with to say to Ronny was, "Cock On! You crazy ass son-of-a-bitch."
by locohobo February 09, 2011