I keep hearing the word "pb-ing". What does that mean? When/why does it happen?

:Banane20: Great question I was wondering that as well.

It means "Productive Burping". Apparently it means when u possibly eat too fast, or don't chew well enough, when you burp, some of it comes back up

i think i experienced this for the first time yesterday. yesterday was my first day on mushies and after my appt i came right home to have some scrambled eggs. i didn't eat them overly fast but i did notice that at one point, i burped and felt a bit try to come back up. it seemed to settle back in there again though and all was well. thank goodness!