a nickname for a beated up car or her driver. risembling to POS, but with a differance: the shasi car has gone through lots of accidents, beating up and stupid driving. can also be used to describe someone who thinks he lives in a movie (fast&furious for example) while his car is but ugly, shasi (see above) and slow as hell.
"That car is shasi!"
"Shut up, Shasi!"