Young women, usually overweight, that are so egocetnric and self-absorbed that they make up cute little words to describe themselves and their so-called "friendship".
Those three fatties we met from Wisconsin seemed cool at first, but then they turned out to be total thrins.
by Joe Borczack April 5, 2007
Get the thrinmug. by Spazzy McGee November 9, 2008
Get the Thrinmug. Another word for triplets...
by Kumalala_2.9 May 1, 2024
Get the Thrinsmug.