(4-methylmethcathinone (4-mmc), 4-methylephedrone)  boy1 : are we going clubbing tonight?  boy2: yeah are we getting some bubble?  or  boy1: here mate, you wanna line of bubble
mephedrone or methadrone - a chemical used for fertilising plants, also recently used as a recreational drug
"(4-methylmethcathinone (4-mmc), 4-methylephedrone)  boy1 : are we going clubbing tonight?  boy2: yeah are we getting some bubble?  or  boy1: here mate, you wanna line of bubble" What is the definition of "bubble"?