how do I get the sock in the game
in twisted fate, if you choose either "How about you suck my dick and I won't report you to the principal?" or "No, you psychotic bitch." after the cheerleaders tie you down, kate will force her dirty socks down your throat.
then, at the end of the quest when isabelle shows up to untie you (if you sided with her in the beginning), you can spit them out or hide them from her. if you do the latter, you keep kate's dirty socks as an inventory item.