1 definition by rubydoo

cos

Cup. Of. Sugar. A definition for a girl that is so hot that you would actually date her. You would go to her dorm/residence and make the excuse "i just needed to barrow a cup of sugar" because she is so hot.

Guy #1: Dude I went over to that cos's house today
Guy #2: really? she is so hot.. good for you

by rubydoo February 4, 2010