There should be no damage if you do it right... you only need say 5ml to completely dissolve 100mgs
unless your talking about the chemical booty burn, that could end up being a problem after a while... but I dont think you would get any water damage unless your putting in huge amounts
Theoretically, 1g of MDMA should disolve in 1mL of water.
It'll come on about 10, maybe 15 minutes faster if you're lucky.
Ive never plugged MDMA, its works so well orally there is no reason too. But I hear good things from people who do
Remember to take a fat shit before you do, you wouldnt want your poop to suck up all your MDMA and steal your dose... the shit head!
plugged mdma is best administered as a solution (2ml maybe), not a bunch of crystals jammed in your pooper.