they crave this alcohol so, that one who is over 16/18/21 or whatever, can get them to do anything in return for alcohol, and the promise of more alcohol to come.
anything within reason, of course.
'hey can i have some alcohol?'
aside 'looks like i've got me a 'lil alcohol whore'...
'sure, i've got me an alcopop right here. just get down and gimme 20'
'no, not pushups.'