Idioms of the world.

"Dude, you're ex is going crazy!"
"Not my circus, not my monkeys..."
I'll save that for future reference.

I know a couple of Persian ones...
"If you pay peanuts, you'll get monkeys working for you"
"Camel see, no see" - means like someone is walking past you with a camel, and you pretend you never saw him.

I speak spanish I never heard pumpkin one. I personally like "to not stand (or stop?) balls" is to not pay attention :)

The Danish one is definitely based on a miscomprehension.

The Danish one is Wrong! It means to Get fucking drunk ;)