A Molly (MDMA) burp. flavor usually being similar to lighter fluid or some other type of gasoline type flavor. It only seems to happen when you ingest certain types of Molly (usually types which are cut with a lighter fluid type chemical). The experience is unpleasent non-the-less, however it is a good indication that your roll is about to increase.
1. Dude, I just Murrped
. That shit is so nasty, But I feel good as shit.
2. Hey man can I borrow your lighter to see if I can light my Murrp
3. Bro did you just Murrp
? That smells terrible.