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Someone who acts retarded and high all the time, even while completely sober. Also usually laughs at everything, no matter how unfunny it is.
"Wow, Lisa is such a retardijuana, she's been laughing at that dead dog for like 20 minutes."
by Shady Persson March 27, 2009

Words related to Retardijuana

high retard retarded retardijuano stupid