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1.
(1) someone or something that smells somewhat unpleasant, a bit gopping, rancid etc.

(2) a person who's personal hygiene leaves something to be desired.
You smell like a reisty tramp.

That fart is fucking reisty.

"Go have a shower, you reisty fuck"
by NoCLG September 02, 2009
 
2.
High or drunk. Basically just "on one"
Even the principle at our school knows we keep it reisty.
by johnnyboy69 September 15, 2012