No real definition, its up to you you to decide, have fun making shit up !
"I'm about to gurk yoo' ass dawg." "Yo, you gurkin' hot shawty."
Someone who says something totally inappropriate to a woman without even knowing her.
The man said to the woman, "I like your dress, you should have worn one that show a little more ass in my opinion."
(The man "Pulled a Gurk" when he said that to the woman)
If you want to Pull a Gurk, you need to be an asshole to a woman who is a stranger to you.