🯹

The last copyable Unicode character as of 11/18/2020.
Since Urban Dictionary (along with other sites) sorts their definitions in alphabetical order, this is the last definition on the site.
It looks like a rectangle on most computers.
This is also one of the Symbols for Legacy Computing, which wikipedia has an article on.

Guy 1: Oh, so you like symbols? Name every Unicode character
Guy 2: Challenge accepted
Guy 1: Wait no-
A while later...
Guy 2: 🯰 🯱 🯲 🯳 🯴 🯵 🯶 🯷 🯸 🯹 done
Guy 1: Wow we should copy and paste this somewhere
Mod: *deletes it because it's spam*
Guy 1 and 2: NOOOOO!!!
Guy 3: *secretly copied it to claim it as his own*

by Vexian Empire November 19, 2020