Why do we have a word for this but not for the day after tomorrow

"Overmorrow." You're welcome.

When in doubt, blame Shakespeare. He seemingly invented half of the words in modern English.

And why does "defenestration" sound dirtier than it really is?

this was always one of my favorite words. when you threaten to defenestrate someone, they are both shocked and confused.

It happened to Jezebel. That's how I discovered the word.

Övermorgon, batches

Learned this from AP Euro, the Defenestration of Prague is a real thing

"Formal Humorous", splendid

I used this worder today!

Haha we have both words in French!
Not very impressive though: défenestration, and après-demain (literally aftertomorrow).