1 definition by sd489
any pair of pants, where the wearer can feel comfortable and without worry about how they looked, only that they are the most comfortable pants ever.
fat pants may be: old, a size too large, or stretched from excessive use.
fat pants may be: old, a size too large, or stretched from excessive use.
Before the movie started, all the girls prepared for girls' night by making popcorn, getting out ice cream, and putting on fat pants.
by sd489 October 17, 2005