What does joob-joob actually mean, if anything, in Thai?

Tiny Thai Tak lady called me on the phone (just as I was about to start eating my Friday Pizza - women are psychic - how do they always call just exactly as you sit down to dinner) and at the end of our call joob-joob was what she signed off with.

I have never heard anybody say that in Thailand. The only place I have seen it used was as some kind of joke here on Teh DOOR so I assume it is a Thai idiom of some sort.