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 doesn't blow, he sucks.
Billy- "Went on Urban Dictionary and looked up words like 'sucks' and 'dick'."