Growing up, I went through a very brief period where I put corn syrup on my pancakes instead of regular syrup. My parents weren't home, we had no syrup, and I didn't know exactly what corn syrup was except that it tasted sweet and was thick like regular syrup. I continued to do it just for the novelty until one of my parents saw me putting corn syrup on my pancakes and told me to knock it off.
Thinking back on it now always grosses me out and makes me avoid corn syrup where possible, but eating it raw like that honestly didn't taste bad.