A person, usually a hipster, who claims to live a Rastafarian lifestyle, but in reality doesn't at all, whatsoever. Tons of stoners claim to be Rastafarian, but the only thing they do is smoke weed and wear Rasta bracelets.
dean: i'm rastafarian
me: what do rastafarians believe in?
dean: ummmmmm. look at my bracelets!
me: you're a rasta imposta
a person, generally caucasian, who likes to listen to reggae while going to college. Their dorm room or apartment (usually paid for by parents) is adorned with Bob Marley posters. Generally, the lifestyle is an excuse to enjoy copious quantities of marijuana.
That impastafarian upstairs needs to turn that crap down, or it won't be just the sheriff getting shot.
PLEASE STOPGET OUT OF MY HEAD h̴̢̨̗̣̱̜̻̫̯̪̼͚̤̙͙͔͓̫̭͙͎̩̠͕̥͚͍̋̅͋̉͛̈́̆̾̔̑̐̉̄̈́̂̽͗͜͝ę̴̘̤̭̪̦̖̭͓͓̰̭̟̳̱̹̲͉̭̞͙̞̰̪͉̂̒́̆̌͌̆͐̑͌͊́̆̉́̚͝l̵̡̨̥̹͇̝̰̣͉̘͙̘͔͎̖̤̱͇͍̗̼̮͎̈́̈́̓̃̔͒͂͑̑̈́͝ͅp̶̧̨̫̗͇̻̟̮̖̯͔̭̘̞͕̤̙̘̻͍̫̗̙̖̮̙̲̝̯̟̮͙̔̈́̌̀̓̿͋̔̈́̈́͛̓̓̆͛̚ͅ
HEY BRO HAVE YOU SEEN THESE AMOGUS SUSSY IMPOSTA BALLS NOOOO STOP GET IT OUT OF MY HEAD