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
 Get the mutual crustmug.
Get the mutual crustmug. A specific variation of freshman boy, most commonly falling in the "Debate Trash" category. This kind of freshman boy commonly enjoys giving out insults which are most likely a legitament problem of their own. Often uses excessive profanity to prove their point. This type of person is also very hypocritical in the sense that they would for example: call someone a fag and tell them that they are homophobic.
by døgg May 20, 2016
 Get the crustmug.
Get the crustmug. by D561 September 27, 2025
 Get the Stuff my crustmug.
Get the Stuff my crustmug. by Rebmaeyak April 22, 2018
 Get the bone crustmug.
Get the bone crustmug. A Simpel Crust(™) is someone who is a wannabe funny guy, who plays Minecraft half the day, and is bad at combos in everything else, and hasn't finished The Office
Person 1: Man, that Moroccan Christmas episode was.. wow!
Person 2: You JUST got past that episode?
Person 1: Yeah?
Person 2: You're such a Simpel Crust™.
Person 2: You JUST got past that episode?
Person 1: Yeah?
Person 2: You're such a Simpel Crust™.
by Simpelist Crust™ July 10, 2019
 Get the Simpel Crust™mug.
Get the Simpel Crust™mug. Crust is a term/slang that is used when something or a person is bad. Think of an soup that was left over 165 million years ago, when dinosaurs existed. Now imagine how that soup would be like. Lots of mold inside it, crust inside it, really disgusting orange and yellow stuff in the pan sticked to the pan. That's crust.
Here is some examples of how crust is used:
Here is some examples of how crust is used:
by skiddxed August 2, 2025
 Get the Crustmug.
Get the Crustmug. When your partner stops wiping for weeks on end, leaving a build up for you to enjoy eating at a later date. (Front and/or Back).
by Bobson Friesburg April 16, 2025
 Get the Crustingmug.
Get the Crustingmug.