Top Definition
The term 'Retartic' refers to one who is 'retarted', a 'retart', or 'tart' for short.

More specifically in the UK, being Retartic refers to an individual that likes to touch himself whilst watching Beetlejuice the cartoon.
Jez is being retartic, he's smoking lots of weed again and watching Nickelodeon.. look at the stains on his pants.
by rememberwhenyouputmeongumtree? November 20, 2009
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