Re: What the heck is that white tonsil goop?
This white chunks are called tonsilloliths. There doesn't seem to be an agreement on whether the chunks are decayed food or actually decayed tissue. Either way, they can feel weird, possibly cause irritation, and definitely smell really bad.
If you leave your tonsills alone for a week or so, you can use the smooth capped end of an eyeliner pencil or a makeup brush (sanitized and sterilized of course) to pop the white chunks out. There is an elective surgery now available for people who can't take them anymore. I don't know the name, but I read about it in self magazine last year - instead of removing the tonsils, the doctor can use a laser to close up the holes by scarring them.