1 definition by coolgreyyyfoxx

U.S.R.

An acronym, that stands for Ultimate Sack Rider, which means when somebody agrees to everything you say, or do, or suggest, to the point in which you can't take it anymore

guy1- We should go to the movies
girl1- totally
guy2- what a U.S.R.

by coolgreyyyfoxx June 1, 2011