2 times that I can remember

When I was 10 years old and we got home after dark and I was chewing grape bubble yum. I got in the house and it fell out of my mouth onto the carpet and I reached down and grabbed it and threw it in my mouth and started chomping and then I realized it wasn't my gum I picked up, it was a piece of dog shit. ewww, FUCK!

I think it has already been said, but once while in a bar, I picked up my beer and took a big swill and swallowed it. It felt warm and thick, unlike beer and I realized it was tobacco spit. I feel like fucking puking just thinking about it.