addendum 

Something that is added or later to be added, e.g. a supplement to a book.

"I decided to add an addendum to my novel after I'd finished writing it."

addendum by Brendan Sinclair December 28, 2005

Sock rule addendum

As the true creator of the rule not like the imitators, i’d like to clear some things. First thing first wearing 1 sock doesn’t change anything it’s still gay, that’s the law. Second thing, all those who claim to be the true creator are wrong I created this rule back in 2013 as a joke with my friends. I posted it back in 2018 to stop people from claiming it and changing the rules. So remember keep those socks on unless you like cock! Love- no socks

Sock rule addendum. It’s gay if you’re not wearing socks. See Sock rule for further clarification.

Sock rule addendum by No socks November 9, 2021

mannerly addendum 

An "afterthought" phrase that someone throws in at the end of a sentence to modify it into a more-polite statement.

A classic mannerly addendum is when someone hastily asks you to perform a certain task as he is rushing out the door, then pleasantly adds, "Please and thank you" after he's voiced his request.

mannerly addendum by QuacksO October 26, 2018

Liberal Addendum

When a person adds an extra form of clarification, so that the joke doesn't seem offensive.

Person1: "I bet you like guys. Not that there is anything wrong with that."

Person2: "Did you just use a Liberal Addendum?"

Liberal Addendum by GarfieldGetsTrappedInNewYork November 27, 2023

The Davison addendum

A chess rule that allows either player to place and/or leave their king in check. But only if the attacking player is unable to capitalize on the move example: capturing the king would result in their own king being placed in check.

Wanna play chess? Let's add the Davison addendum.

The Davison addendum by Thunderprime November 2, 2021

The Davison addendum

A chess rule that allows either player to place and/or leave their king in check. But only if the attacking player would otherwise not be able to capitalize on the move.

Example: Capturing the king would place your own king in check.

Want to play chess? Let's use "the Davison addendum"

The Davison addendum by Thunderprime November 2, 2021

The Davison addendum

A chess rule that allows either player to place and/or leave their king in check. But only if the attacking player would otherwise not be able to capitalize on the move.

Example: Capturing the king would place your own king in check.

Want to play chess? Let's use "the Davison addendum"

The Davison addendum by Thunderprime November 2, 2021