Rule #1 in every crazed fan handbook: Never run up on a celebrity - especially when said celebrity is fully equipped with massive bodyguards. One of Lady Gaga's biggest Little Monsters obviously didn't get the memo, as he ran up on Mother Monster like a man possessed as she was exiting a hotel in Romania.

Needless to say, her massive bodyguards stepped in and the guy was swiftly taken down and served a heaping dose of reality, with a side order of embarrassment - and it was all caught on film.

Gaga seemed startled at first, but quickly realized, "Oh yeah, I have huge security guards to crush idiotic fans who don't know how to act."

Hopefully PETA isn't planning on pulling any of their usual fur-defending antics anytime soon. Especially with these guys around.