Not good. Bad.

The early Jazz musicians would say that a guy could really "Blow" if he had a good sound when playing the horn. If he couldn't play very well then they would say that he was "Sucking" on that horn. That's where the term "Suck" as being something bad came from.
He plays that horn so poorly that he must be sucking on it.

He doesn't blow, he sucks.
by Don Kotas August 06, 2004
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Definition 1-- Is bad at something
Definition 2-- Is overall unpleasant
Example for definition 1--

Person-- Boy, you suck at volleyball

Example for definition 2--
Person-- *having to do chores* Well this sucks
by AshKetchumPoketraineer February 05, 2019
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(for those under 30 years old) An intransitive verb indicating a negative state of affairs. Could be poor performance, bad weather, illness, general dislike, or any of innumerable negative thoughts.

(for those over 30 years old) Always a transitive verb. Colloquially used as shorthand for suck dick with noun dick understood. Synonymous with blow and bite. Used as an insult; indicates homosexuality.
(under 30) Cracka 1: Hey did you see the Simpson's last night? Bart said his father sucks!!!
Cracka 2: So, what's your point?

(over 30) Son: Gee dad, I don't want to do my homework. Math sucks.
Father: You're grounded for a week, you perverted little delinquent. And wash your mouth out with soap.
by cunning_linguist February 03, 2006
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A word used when describing how to drink out of a straw
Make sure you suck on the straw not blow
by Haxle12343 December 15, 2018
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The opposite of blow, yet they are used as the same word. . . wtf?

what all women want to do to me
1. She sucked my cock.
She blowed my cock.
2. Wow this sucks.
Wow this blows.
by Drew January 21, 2005
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"To suck" or "you suck" is derived from, or is a shortened form of "to suck dick" or "you suck dick." In effect, it is the equivalent of saying "that's gay" or "you're gay." (You suck dick, so therefore, you must be gay.) This, in turn, comes from the assumption that homosexuality is "wrong" or "bad." Therefore, if something "sucks" it is "bad."

Isn't it strange how widely accepted the term is? Everytime you hear someone say "that sucks" on TV, they are essentially saying "that sucks dick."
Lil' Timmy: Dave, you suck at hopescotch.
Dave: Frig off, Timmy - you are so gay.
by Time4SumAksion February 28, 2005
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Not proficient in whatever or however you are going to confront a situation and/or event.
Tom: "I hate doing presentations. I suck at them!"

Bill: "Well Tom, 'if you are going to suck, suck good!' " (Thumbs Up)
by LucyJewls07 July 29, 2009
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