1. A person who performs fellatio.

2. An insult which defines the insulter as a person with a very negative attitude toward sexual behaviour, esp. american.
1. (S)He licked and sucked the guy's cock until he nearly fainted with pleasure.

2. He was raised in the bible belt, having the far-righteous christian belief that any sexual act other than the missionary position is not only his business, but wrong, and so, when confronted by a person he didn't like, called them a cocksucker.
by edjog October 7, 2005
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Someone that feels the need to explain that they are not gay to people around them that assume they are gay.
You assumed right about me, I'm a cocksucker. I'm a fuckin faggot, I'm just not a people person, so I don't include myself in any organized group of fellow faggots like me, and I don't include them with me.
by The Original Agahnim May 26, 2021
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1.Something you dont call a guys girlfriend.

2. A complete Jackass that doesn't give a shit.
1.
Guy:Your girlfriends a cocksucker!

Boyfriend:Your dead!

He then jumps on him and punches him in the face until he breaks his nose.

2.
Guy: My grandma's in the hospital! I'm on my way right now!

Cocksucker:Hey on the way pick me up some Fried Chickan.
by lev1234567 June 22, 2009
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A cocksucker is can be two things, someone who literally sucks a lot of cock, or a bitch who kills the vibe. Being a cocksucker is not a good thing!
Guy 1: This dude is on my fucking car, what the hell!
Guy 2: Get off you fucking cocksucker!
by 💀🐍 November 13, 2017
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