I used to drink that much at his age.
I think it's a female judging by the charm bracelet and the somewhat long hair tucked into the hat that you can see as the truck rolling over her face loosens it. (That just sounds wrong)
I used to drink heavily in my college years but I could get away with it too.
No problem to go to class the next day after coming home at 2am out of my mind level of drunk. Rarely would I get a headache.