Sliming, foam, and PB'ing...
Sorry, gross post question!
So please tell me what your definition of each of the above is. I have noticed if I eat the wrong foods, I start burping, and foamy saliva comes up with it. Last night, I went to the Cheesecake Factory with family. I stupidly ate 2 pieces of the white bread they put on the table, and it was very painful. I had to go to the restroom, and I kept burping up saliva mixed with the bread, and I kept burping it up and spitting it into the toilet until it was all gone and the pain was gone. So I didn't really throw up, but I could make myself burp all of the bread out. Is that what you call PB'ing? If I drink water too fast, I can get foamy burps of just saliva and water.

I had always read about PB'ing and sliming, but never really paid attention until it happened to me. The doctor will ask if I've ever had any vomiting, and the answer is no. But I have had times where I've managed to get the offending food back up and out by burping it out. For me so far it has been bread, tortillas, turkey pepperoni (which hurts because of the spiciness), and walnuts. I ate some Spanish rice in a Mexican restaurant with no problems.
And why no cold drinks? I can't even eat a popsicle without getting some foamy burps. Drives me nuts!