What is Non-optional?
1.
a shower that is required after finding out the crap you just took has stuck to your ass like peanut butter and it's such a mess a shower is required, regardless of circumstances
Dude: The girls are here - what the f' where have you been?
Self: Dude, sorry I'm late for the double date, I had to take a non-optional before I left home.
See
