alumagnetic

A term used to describe a material, like aluminum, that is unaffected by magnetic fields. It is the opposite of ferromagnetic, which refers to materials like iron that are influenced by magnetic fields.

person: "I tried sticking a magnet to this aluminum plate, but it didn't budge at all."
Mehdi: "Well, that's because aluminum is alumagnetic—it doesn't get affected by magnetic fields like iron does."

mint crystal

also called "cristaux de menthe" in the original language.
it's the fake crying and sadness used in a staged call-out video by an influencer.

The term originates from a video by the french YouTuber "Pierre Chabrier" , who used "mint crystal" to make himself cry.

A: "Did you see their response to the drama? They were crying so much, it seemed authentic."
B: "Let's wait for the other side to respond. I think it was mint crystal."