1 definition by cumgirl69
a group of best friends who are seniors in highschool and who are very cocky. these guys are usually fun and kind hearted but come off as douchebags at first.
CSDB=COCKY SENIOR DOUCHEBAGS.
girl #1: look at those guys! they're soooo dreamy!
girl #2: too bad they're CSDB.
by cumgirl69 Nov 27, 2010 add a video