1.) Coined from the movie "The Hangover". The way someone refers to someone else who is stupid when they are completely oblivious to the fact that they are, indeed, the one who is retarded.
2.) Calling someone a retard playfully.
1. (guy 1) You have to be really smart to count cards.
(retard) You tell that to Rain-Man
, he almost bankrupted a casino and he was a ra-tard.
(guy 2) Its "retard", you retard
-Not exactly the movie quote but it gets the job done.
2. (guy saying to some girl-friends (friends that are girls))
I hate you guys.
(girls start to pout)
Girls stop being such ra-tards, you know I love you! :) (smile)