-That Savage and Liz actually got married at Summerslam when in reality they had already been married for years (and I think they were separated or divorced at the time of their kayfabe wedding).
-When Cactus Jack and Terry Funk took a ride off the RAW stage in a garbage dumpster courtesy of the New Age Outlaws. The way that the aftermath played out live had me convinced that it wasn't a part of the show.
-Jobbers back in the day (other than Barry Horowitz and Iron Mike Sharpe) were just normal human beings that didn't possess the superpowers of the established stars (props to the Ryback character for bringing this back in hilarious fashion).
Indeed, perception is reality in the wrestling world (and getting conned into believing is why we all love this crazy business, right?).
I used to think they used blood capsules. I was shocked to discover the practice of blading to bloody wrestlers, it just seemed astronomically dangerous and stupid in an age after the discovery of deadly blood diseases like HIV and Hepatitis C.