What is C'ard-on?
1.
The type of hard-on guys get in a car, usually while driving over a continuously bumpy road.
Guys in a car going on a camping trip:
Hey - check-out Jake - he's asleep, but has a c'ard-on.
That's funny!
Guy thinking to himself:
Damn bumpy road - giving me a c'ard-on.
See 
Random Words:
1. 
what u say to a woman when u dont want to put up whith any more of her shit.
sara told me to switch off the football game, but instead ..