LOL, you should get into rehab, son.
yeah, i should.

actually im not a pill head. but i know M like the back of my hand.
i can tell you good M from it's smell and its taste. good M will have a smell reminiscent of black licorice to it. it'll taste very bitter. almost like an acidic compound of some nature- but it is very distinctive, almost numbing as well. in bulk (say an ounce) it'll look like anything from brown sugar to a harder more flaky darker substance- think something like little shards of glass the colour of coffee- typically this stuff will smell like sassafras (sp?) or more chemically by nature. it should be easily crushed with a little pressure into a finer powder- if you need a coffee grinder to crush it then it's prolly MCPP- a metabolite of the M family passed off as MDMA.
there is zero stimulant effect to MDMA, actually it'll make you too mashy at some doses.
a lot of people mistakenly believe M to have stimulant like properties because it is the primary compound in a tablet of ecstasy- but it isnt the M that gives you the speed type feeling off a pill, its the other adulterants they add to it, such as ephedrine, caffeine and in some cases crystal, though not often.
here ends your crash course in MDMA.