What's the name for the neurological phenomenon...

[nuxvomica]

where you have to finish a well-worn song or phrase that someone has started but won't complete? Like when someone says "Shave and a haircut" and you have to say "two bits." All I can remember is that the name of this phenomenon begins with a "Z".
:dunce:<--me

[Anaxamander]

1. You mean like when you hear, "Don't turn around, uh oh..."

and you have to mutter, "Der der der komissar's in town, uh oh!"

I have no idea. :P

[nuxvomica]

5. Yeah, that's it

Your example is of a more recent vintage than mine but not by much.

edit: now I've got that Kommissar song in my head!

[supernova]

2. The thing itself is an "earworm"

and part of it is that you have to complete it before you can continue thinking about something else.

But I can't think of another word.

[nuxvomica]

4. I thought an "earworm" was a song that you can't get rid of

Like I am currently experiencing with "Stairway to Heaven".

[CrownPrinceBandar]

3. "I'm sailing away...."

"West Si-eede!"