Yadunno

Yadunno is a shorter version of saying "I don't know".

Dunno is a short version of saying "don't know" so yadunno would be "I don't know".

Person 1: Do you want the last half of my PB&J sandwich? I'm unusually full.
Person 2: Yadunno!

Sade

Sade means a French soldier and writer whose descriptions of sexual perversion gave rise to the term "sadism"

Pronunciation: Sah-d

The word came from a French philosopher named "Marquis de Sade"

There is also another meaning for Sade. It's a female African women name that means "honor bestows a crown"

Pronunciation: Shah-day

1st: That guy from France was a Sade.

2nd: That girl from Africa told me her name was Sade.