Someone who gets caught in an unwanted relationship with a girl after a one night stand. A cross between the words "quicksand" and "chick"
Dave: Guess who just spent an hour watching her dance videos from high school, listening to her story about how her boyfriend stole from her dad and slept with her cousin, and bought a joint membership at LA Fitness because of free parking, after meeting her parents?
Brian: You're stuck in some major chicksand, dude....
Guy1: "Oh man, I can't break up with this chick, because she totes has a history of bad boyfriends... I feel like I'm the only thing stopping her from becoming another depressed, miserable, man hating, feministdyke."
Guy 2: "You're in chicksand bro."