Jennifer Garner stopped by 'Late Night with Jimmy Fallon' last night and beat him at his own game. Literally.

Fallon challenged the mother-of-two to a game of beer pong. Garner joins the ranks of Kate Hudson, Charlize Theron, her 'Arthur' co-star Helen Mirren and Betty White in going up against the 'Late Night' host in a round of the college staple.

Although Garner said she'd never played before, she playfully defeated the host, appearing to be nothing short of an old pro.

Garner is out promoting 'Arthur,' which also stars Mirren and funny man Russell Brand.