Originally Posted by
crazy8534
I am reliably informed by my children that the correct term nowadays is "povos"....

I think it is the fact that the glass is not filled adequately.
Bonded means that they can't open (e.g. the LPGS) until they are in the air, normally for local taxation reasons.
Thanks! Follow up povo question - if they can’t open the champagne until they are in the air, how did the OP get part of his glass filled?