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1.
A hard on induced by a retarded person.
Dude, that girl from special ed gives me a raging 'tard on!
by Billyclub Lenny February 05, 2007

Words related to tard on

boner retard hard on hard-on horny sex tardon tard-on
 
2.
When a mentally handicapped person gets an erection.
A retard with a boner has a tard-on.
by EverynightJunglist May 24, 2009
 
3.
someone who gets so excited about Doctor Who
Alright, don't get a tard-on
by senor g-string November 30, 2010
 
4.
A hybrid word using the terms "Tard" and "Hard-on".
Tard = mentally handicapped or just plain stupid.
Hard-on = excessively strict or severe, not an actual erection.

When the words are combined, you get: a person who thinks they are in charge and are excessively strict and/or severe, however that person is or is border-line mentally handicapped and every ignores him.
John: Oh boy, Here comes Ted.
Ted: No talking during break time! My shoes hurt!
John: Ted, you're such a Tard-on!
by Jason's shoes hurt! June 07, 2010