n. -one who does not have the mental capacity to properly and safely navigate a public road.

Some one who drives like a retard.

Someone suffering from Roadtardation

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

A severe mental disorder where a driver on the road is oblivious to basic motor vehicle operations and rules of the road. This condition affects teenagers to seniors.

Symptoms: Random braking, new driver sign, new driver sign written so badly that it must have been made by kids in play school, cutting you off, staring straight, unable to execute a turn while staying in his/her lane, driving onto incoming traffic...

Side Effects: Causes other drivers on the road massive road rage as well as giving them the middle finger.

Roadtard is a play on the word "roadguard", which is used to refer to a member of a military flight who stands in the way and blocks oncoming traffic so the flight can have safe passage across a roadway.

A roadtard is a roadguard who performs their duties in a ridiculous and/or mockworthy manner.