I'm not certain what "tripstasy" is a nick-name for, but it could be all sorts of things. If you enjoyed it the first time when you took one, then use your judgement- if you're not certain what chemical you're putting in your body, but just knew the prior experience was pleasant, it's likely safer to start with one pill, then re-dose when/if it feels right. It's been said many times: you can't un-take a drug, but if decide one wasn't intense enough, you can always go for a second dose.