An internal, extra-sensory detector allowing for the identification of retardedness and people acting retarded.
If it weren't for my excellent retardar, the guy on the cell phone, while riding his bike would have become road kill.
by Izzyhart July 29, 2008
Mandy: That kid is totally autistic.
Brian: How can you tell that by just looking at him?
Mandy: I have retardar.
Brian: How can you tell that by just looking at him?
Mandy: I have retardar.
by Diane Mower July 26, 2008