A national holiday celebrated annually in which an equal amount of males and females come together to celebrate. Celebrations include taking turns durfing each of your closest friends in expression of thanks. Typically Durfsgiving is celebrated on the evening of the third Thursday of November after family Thanksgiving celebrations have concluded, but can be celebrated on any night during the year as many times as you want. :)
Durfsgiving is culturally and linguistically connected to the popular holiday "Funkaween"
Male: Hey (GIRL) I am so thankful for our friendship! Want to come to my Durfsgiving party so I can show you how grateful I am for you!
Girl: Of course! I'm gonna durf your penis off because I am so grateful for you!
A word whose origins come from the hit television sitcom "Seinfeld". One of the recurring characters, Cosmo Kramer, had been called this (as far as I know, on more than one occasion).
I assume it's supposed to be an insult, referring to the person as someone who thinks they're cool, yet is (according to the insulter) quite the opposite.