Another word like stimulate, such as "fire" or "energy" ...feeling enthusiastic, full of ideas, active or feeling good. You could say that is being stimulated. You'd get a better response with a "fire weed dot com" or an "energy weed dot com", in comparison. Keep the brand simple ...stimulating MJ / stimulating mary jane / stimulating marijuana ...its too much. I respect you've cut it to "STIMJ", but I believe its tough
(In my opinion)