Le Chatelier 

To take a poop at a fancy party and/or restaurant

After I finished the surf and turf, I excused myself to Le Chatelier before desert arrived.

Le Chatelier by Butter Baron June 2, 2011

Le Chatelier's Principle 

No one gives a fuck.

"Have you heard about Le Chatelier's Principle in Chemistry yet?"

"Yeah, no one gives a fuck."

Le Chatelier's Principle by Rusty Handle April 5, 2017