Jewish grandmother, endearing term (yid.)
'Bubby Rose is coming over for dinner.'
'Bubby Rose made you a sweater.'
to platz (yiddish): to burst (met.) (out of excitement, joy, etc), or even to throw up. Unable to contain yourself for whatever reason
I was so excited, I almost platzed!
This is great news, I cant wait to tell him/her, he/she is going to platz!
The deal has platzed, it's over.