What did he call me?

[OneEye]

I was walking to class today and made eye contact with this guy. Apparently that was enough to make him mad, because when I passed him he turned around and yelled at me. It sounded like "Gǎn xiàn nǐ yóu yuán zù!" No clue what it could mean or if I heard it right. I'm in Taipei so there's also the possibility that it was Taiwanese or Hakka (or who knows what else). Any ideas? I have a thick skin, I can take it.

[imron]

Something something 你有眼珠?

[OneEye]

Could be. I do indeed have eyeballs.

[Kenny同志]

No idea what it means. Perhaps it's not Mandarin.

[rezaf]

你有圆珠？maybe it means "you have balls!"

[OneEye]

Could be, but so far I'm going to say 眼珠 makes the most sense, because I got the impression that he didn't like me looking at him.

He also sounded like he could have been a bit drunk. I don't have enough experience with drunk Chinese yet, but he sounded pretty slurred and surly. Slurly?

[xianhua]

I do indeed have eyeballs.

Your username would suggest otherwise.

[Yang Rui]

Could it be something along the lines of "f*ck you and all your ancestors"?

Gan4 means f*ck and the presence of "zu" at the end makes it sound like it could be something ancestor-related. Still doesn't make sense from the exact phonetics you wrote down, but in all the excitement you might not have picked up the exact wording.