>>196273678They do feel good (to put it mildly) but long term you will fuck your brain and skew its ability to feel any pleasure whatsoever. It's like the highest high possible, completely unnatural. It ruins normal wanking as well; you just think "what's the point?" with regards to sober wanking after you've experienced gooning on speed / mephedrone.
It's the only true form of gooning. Sober gooning isn't a thing. It's not remotely comparable to wanking for 2+ days straight on chemicals. I've done many drugs throughout the years but the only one I can say I was (or still am) addicted to is mephedrone for speedwanks. It's bad news mate. I would recommend not getting into it.