To ask someone "why do you suck so hard?" is a sexual pun that refers to oral sex sarcastically, while generally implying that the person just REALLY emphatically sucks.
You never want to party. Why do you suck so hard?

As if to say:
Why you gotta drag your teeth?
Maaaaan, you deeply SUCK.

You haven't been out with us in ages. Why do you suck so hard?
by Linguistic Penguin November 12, 2013
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How come all my customers are men? It would sure be nice to meet a few chicks around this joint for a change.
after ordering Gooberberry sundaes
Spongebob: Oh waaaaiiiter!!! Waaaiiiiiiiter!! WaiTOR! Waiter!
Waiter: Why do I always get the nuts?
by jm080800 June 29, 2019
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a question that a good boy has been having for a real long time. even though he's good, he has been bad and it's plain to see. so why do good girls fall in love with him?
"hey, freddie?"
"yeah ricardo."
"why do good girls like bad guys?"
"IVE HAD THAT QUESTION FOR A REAL LONG TIME"
"IVE BEEN A BAD BOY AND ITS PLAIN TO SEE"
"SO WHY DO GOOD GIRLS FALL IN LOVE WITH ME?"
by November 15, 2018
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