What does it mean for a guy to be a jerk?

Well, he would be a jerk if he:

-Lacks common courtesy.
-Punches 당신 in the face for no reason.
-Blackmailed you.

And a number of other things.

I'm a guy myself but if he were a jerk he would:

1.Offends 또는 insults you
2.Punch 당신 for no reason
3.Lacks the courtesy to even greet 또는 look at 당신

And a bunch of other stuff.

i'm a guy myself. but to me, he'd be a jerk if:

he's rude.
he's picky.
he's a playa.
he's mean.
he's a bully.
he's a snob.
etc, ya'know?

-Keeps secrets
-Cheats on you
-Doesn't want to spend any time with 당신
-Says that he cares when he really doesn't
-Embarrassed to be seen with 당신 in public
-Buys complete crap for out of pity
-Rather hangs out with his other guy 프렌즈 더 많이 than hanging out with 당신
-Only turns to 당신 when he's bored

....yeah, that about sums it up plus many 더 많이 things that would make him a jerk