Ugg boots or Ugg boot clones.
Disturbingly ugly shin to knee high leather boots frequently worn by bimbo-type women and rarely old men.
Some varieties of bootfucks feature fur or laces.
Also see Bootfucker.
Keithan: "Look at that complete idiot with her jeans tucked into her huge fur-rimmed bootfucks."
Dimitrius: "Satan Christ! What a bootfucker!"
Dayrl: "Was that old guy seriously wearing bootfucks?"
Damandro: "...He must be fucked in the head."
Chivrey: "Dude I'm thinking about getting with that girl Abby."
Gustov: "No way man, I saw her last winter -- She's a total bootfucker. All she wore were classic UGG bootfucks."