Mutual crust is formed when you don't pull out after sex and fall asleep. Body fluid from both parties join and dry to form mutual crust all over their private parts.
Jack and Jill woke up Saturday morning and were stuck together by their mutual crust. They had to waddle to the shower together to free themselves of each other.
by jizzum baptism February 23, 2018

by Crusted.creator August 11, 2021

Residue and debris left from a storm that may have passed. Could consist of dirty windows, debris, dusty doors, damaged outerwear etc.
My windshield was so dirty with storm crust, that I thought I saw a buffalo running across the road!
by Breezy Webster February 20, 2019

Someone who has a lot of crust on their hands, feet and knees. The crust has a yellow colour to it and has a rough texture. It can not be fixed by any moisturiser and in plumb, spotty, smelly ginger people.
by Billybobbly man tits December 8, 2018

by Crust01 July 28, 2025

When a woman has gone so long without intercourse, that her vagina has crusted shut. By sticking your penis in her, you bust the crust and she is ready for love
by Buttplug_Barney December 8, 2021

Explains the relation when a man is deeply friendzoned by a woman he just wants as a f*** buddy. It's hard to penetrate through the "double crust"
I thought listening to her problems would make us closer. I don't want a relationship I just want to pork her. Now I've hit a double crust.
by Chessna November 24, 2013
