Is it a song? R-A-G-G-M-O-P-P ??

My brothers and sisters used to always recite

"R-A-G-G-M-O-P-P
Raggmopp, doodle-doop-doop, boom boom"

Is that part of a song or where does it come from ?

Raggmopp ..something from the 50's..
http://www.youtube.com/watch?v=5Tu2V...eature=related

http://www.youtube.com/watch?v=TyANR...eature=related