One who buys an extra litter bottle of milk when sent to get house milk and drinks all of it on their way back from the shop. or one who sits in a cupboard with a pint of milk drinking it fast hoping he wont be caught and exposed.
'im really worried i think that dirty little milk chugger steve is in my cupboard again'

or

'fucksake steve you dirty little milk chugger, you drank all thte milk before you even got back!'
by coxzilla August 31, 2009
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A derrogitory label, the 'milk chuggers' are the dorks likely to be racing one another at the cafeteria to down their milk while their voice-cracking, acne covered friends pound the table and chant "chug chug chug". This doesn't restrict the term to those who chug milk, it's more of a general vibe. They'll be the first in line to do the next brainless challenge on social media, or a daring act of public cringe.
"That total milk-chugger Kyle just played S.O.A.D through the schools P.A system and all his lame friends are in hysterics".

"Those milk chuggers over there, the one with the least pimples.. i guess he's their alpha, just hit on jane and called her a fugly hoe when she rejected him and now they're quoting Monty Python and drinking monster".
by SocialVulture November 7, 2020
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