Her Opponent: Lady Gaga
Why They Were Beefing: Rih-Rih had some choice words for Gaga after the pop singer released the video for her Beyonce-aided song, "Telephone." Specifically, she took shots at all of the product placement going in within it. "I don't like things to be so commercial," she said. "Videos should just tell the story of a song. With product placement, it becomes this big ad campaign."
The Result: Gaga doesn't really do beef—she's probably too busy coming up with those crazy costumes—but we're guessing you're not going to catch these two on a record together anytime soon.