In Canada, in the context of a reaction to smoking marijuana, somebody who becomes slothful, lazy, or restful and generally uninterested in sex. A lothic stoner wishes to be left alone to think or be entertained. The opposite of a lothic stoner is a pelsic stoner.
It sucks that my girlfriend is lothic and I'm pelsic. Whenever we get high together I want to go to the bar and she just wants to sit on the couch alone.