An energy drink that people drink to seem cool and lower class. Tastes pretty good but has been known to kill people because they take too much. Looks 'cool' for a teen to drink it but immature and retarded for an adult.
Kyle : Yo look Riley, Troy has a monster energy!
Riley: Oh yeah dude let's go up to him and see if we can air drink some of that shit
Troy: Fine guys I'll let you smell it and pour a bit into your mouth
Kyle: Dude that shit is so radical man, im gonna go smoke 5 fags then steal some monsters from the corner shop bro
Riley: yeah let's do it man
Kyle: *spits on ground*
Riley: *spits on ground*
Troy: *spits on ground*