Sparks were flying tonight on 'America's Got Talent' (Wed., 9PM ET on NBC). One of the contestants was a clown-slash-Elvis impersonator, which is strange enough already. But then, the insults started flying -- and things got really weird.

[Spoiler alert.]

For some reason, the contestant (named "Clownvis," by the way) sang the kid's song 'Old MacDonald's Got a Farm' in the style of Elvis Presley. This didn't go over very well, and he was instantly buzzed out by all three judges. "Clownvis" wasn't pleased.

Which is when the clown started insulting the judges. He intentionally got Piers Morgan's name wrong, calling him "Pierre" and "Pierce." Next, he moved on to attacking Sharon Osbourne -- saying that she had a "contact high" from living with her husband Ozzy Osbourne. (An obvious reference to Ozzy's past drug abuse.)

Sharon was enraged, and said this: "Nobody disrespects my husband. So f#ck off!"

But the clown wasn't done yet, and neither was the cursing. Clownvis insulted Howie Mandel, saying that he hadn't done a good movie since 'Little Monsters' -- which was made over twenty years ago. Eventually, Howie also told the dude to "F#ck off."

Good times! We're not going to say that Clownvis was "talented," but his entire performance was interesting, at least. And it's definitely something that we'll always remember.