One who has been given additional tarts.
Tartmobile vendor: Here is your extra tart sir. Consider yourself retarted.
Tartmobile customer: Yes thank you I am certainly retarted and happy!
by underdogFromLux August 19, 2006
A retarded person's way of spelling the word "retarded."
Ex: Han Solo is retarded for making a definiton for the word retarted without knowing how to spell it correctly.

by Kfizzle April 14, 2006
Perhaps the most ironic "word" in the history of ever. Frequently preceded by "your" in extreme cases.
"Hey libtards, YOUR RETARTED LOLOLOL!!!" - George W. Bush
by voidsoul May 12, 2009
The past tense for an additional application of tart.
I hit my brother upside the head with a pop tart. I then retarted him with the second one from the package. - Keige
by Sep August 13, 2007
moron: u r retarted!!!!!
Me: Learn how to spell retard, you retard.
by David555 April 8, 2006