bain train 

Bain Train: a name given to an individual who presents outstanding drinking ability in flip cup; drinking skills outside of flip-cup however are severely limited; the individual starts off very slow but continues to drink until a semi-coherent state is reached

Wow, did you see Kevin? He is totally pulling a Bain Train tonight.

bain train by Swoopaloop May 18, 2009

BRAINTRAIN 

THE ACT OF PENILE INSERTION THROUGH ONES NASAL CAVITY.

YO, ME AND MY HOMIES DONE RAN DA BRAINTRAIN ON DAT BITCH

BRAINTRAIN by JACKRAT September 26, 2008