Homer: North, South. Ah nuts to this. I'm going to take a short cut.
Marge: Homer, no, you're going to get lost.
Homer: Trust me Marge, with today's modern cars you can't get lost. What with all the silicon chips and such.
Homer: Alright, we're here! Let us never speak of the shortcut again.
—The Simpsons, "Itchy & Scratchyland"
"The two boys stood at the front gate for three minutes before facing each other. There was an unsaid vow that stated that neither of them would ever mention this incident ever again."
"...I'll say this... The principal offenders were Junpei and Ryoji. We were forced to commit the crime, against our will. We were victims too. ...... ...Now please, do not mention it ever again. "
Rarity: (after having her being brainwashed into loving a giant boulder reversed) let us never speak of this again.
Rarity: (When her falling in love with a boulder is mentioned again) I thought we agreed never to speak of that again.
My Little Pony: Friendship Is Magic, "The Return of Harmony, Part 2"