Can someone please explain these two phrases, what they mean exactly and how you say them/spell them.

Ödumu kopattin? Ödunu patlatmak

I know you say them when someone surprises you/scares the sh*t out of you  (and put the thumb in the mouth and flick your head backwards).

But what do they really mean?!?! How do you say them?!?!

öd means "gall bladder". "ödümü patlattın" literally means "you exploded my gall bladder". True meaning is you scared the s..t out of me.