Girls that think they are cool by taking pictures and to pretend to be like sloths.. But really, we all know they are just retards.
"Look at that girl PROPER SLOTHIN! She must be a retard ..
by Jeremy Billard November 22, 2010
1 more definition
To be bragging about that you look haggard
A girl goes to school, with hair a mess, and wearing sweats. ''i'm Proper slothin' today bhys''
by Lollipop1234567890 November 22, 2010