Pull a Newman

When a full grown man throws a hissy fit and goes back on his word

Mike: "Noah just left the fantasy football league."
Mark: "What? Did he Pull a Newman?"
Mike: "No. I kicked him out of the league before he could quit."

Commodus Interruptus

When you sit down in a bathroom stall at work to escape your coworkers and play on your phone, but then someone plops down in the stall next to you forcing you to leave earlier than planned and go back to work

I was sitting in the shitter at work checking Pokémon Go when some dude came in and pulled a total Commodus Interruptus on my ass. I had to leave before my nose hairs curled too much.