The most vacuous, stone-brained way to say "totally retarded" - totes retar the word is in fact, totes retar.
Annoying White Chick 1: Oh gawd Sheila, the way Amanda wore pink and green together to prom was totes retar.
Annoying White Chick 2: Totally, gross, totes retar.
The phrase is a combination of totes, which is a truncated way of saying "totally" and malote, which is Chicano slang for "bad ass." It was popularized and possibly originated from the animated science fiction show “Rick and Morty”, created by Justin Roiland and Dan Harmon for Adult Swim. It's used by Rick Sanchez in Episode 4 of the first season, M. Night Shaym-Aliens!
Rick and Morty steal processor chips from the intergalactic scammers called the Zigerions and make a getaway in one of their escape pods.....