To "Beaner pack" a car. simply put fit as many people in a car as possible, which usually include turning and bending people to fit in the car much like the very popular game "tetris"
by R.C. Bega May 6, 2008
When landscapers or thrift shoppers, usually Mexican, stack as much shit into the bed of their truck as possible. Much like tetris, these stackers have to be as efficient as possible to bring their goodwill or garage sale goods across the border... hence the game, mexican tetris
by Busy bill July 31, 2019