In my dream I was eating peanut butter cups and suddenly didn't like the taste of them anymore so I tried taking a half chewed one out of my mouth but it was like a never-ending rope. Never could get it all out of my mouth. Weird.
If I had to guess, I'd say it has something to do with something I've said that I wish I could take back. Maybe yours is there's something you want to say but can't get it out? I don't know.