What you yell at your buddy when you're drunk and you want to go out and raise more hell and he just wants to stay in his room and watch a movie...or worse yet, sleep.
I can still go out and raise a ruckus, I don't want to hear excuses, put some pants on....no backtalk, put some pants on. Put. Some. Pants. On.
Usually used when somebody overreacts to a mild situation, requesting that they put their proverbial penis back in their pants.
"How can you eat veal!? Don't you know about the horribly inhumane conditions the baby cows are subjected to? It's an abomination!"
"Woah man. Put your pants back on."
When some resigns or retires from a job, they are on "eternity leave". This can also refer to someone who has passed away, especially someone who worked somewhere for a long time, retired/resigned, then passed away later.
Oh I'm sorry, you didn't know that Kelly is on eternity leave? She resigned and moved to Hawaii!
With regrets I would like to inform you that my boss is officially on eternity leave. I will never see or hear them again. Ever.