To get so drunk you are acting like "Mulc". This would involve picking fights with random strangers, punching holes in walls, tazing yourself, writing on your own face, or doing anything else that you wouldn't want your mom to find out about.
A racial slur for Hispanics because of the common occupation of landscaping. But also sometimes used to make fun of a landscaper the same way grease monkey is used to make fun of mechanics.
Asshole:"Speak English you fucking mulch chuckers"
Landscaper: "Actually I'm bi-lingual asshole and nobody was talking to you so what the fuck do you care? Now get the fuck out of here before I rip you four extra assholes with my pitch fork!"