Russell Brand's Bad Boy Behavior Embarrassed Katy Perry at Pre-Grammy Bash

Russell Brand is known for two things:  being a womanizer and his odd sense of humor.  Fiance Katy Perry has apparently tamed his skirt-chasing and embraced his goofy humor, but like anyone, she was concerned how her friends might perceive him and hoped that he would be on his best behavior when he finally got to meet them.  Brand, however, almost failed in that respect and at an exclusive pre-Grammy bash began joking about Hitler on the red carpet.

At the Clive Davis party, Brand quipped "Sorry, I thought this was a Clive Dunn event. I thought we'd be here talking about Dad's Army, I've been misled." Not realizing that um, half the people in the room were probably at least partially Jewish (it's Hollywood afterall) and that Nazi jokes aren't cool in LaLa Land, he continued by singing the hit sitcom's theme song, "Who Do You Think You Are Kidding Mr. Hitler?".  This received some nervous laughter from the party organizers who hadn't a clue what he was on about.

Brand, of course continued his bizarre banter, moving on to the topic of cocaine. He said:

“Grammys… I know why it’s called that. “That’s how much coke you need to cope with it.”

Katy caught the end of the coke joke, and threw a fit over his antics.  She shouted:  "Stop it and behave! I don’t want to upset the Grammys, I want one.”

Awww. Their first public spat as a couple.  Fortunately it was short-lived and Katy and Russell were all smiles by the time they were seated.  Sharing their table was Rihanna, who was doubled over in laughter with Brand's hijinks.  Katy fashioned a bra out of her napkin,which Rihanna jokingly fondled, and in response Russell pretended to be aroused and made his napkin rise out of his lap.

Katy was worried all along that her friends Rihanna and Taylor Swift might not get Russell's wacky humor, but at the end of the night, she had nothing to worry about.  They totally loved him.