Eminem & Rihanna Ice Bucket Challenge [WATCH]: 'The Monster' Tourmates Accept Dr. Dre's ALS Appeal In Detroit

Earlier this month, Dr. Dre ordered Eminem to complete the viral ALS Ice Bucket Challenge:

@beatsbydre: "Heads up @tim_cook, @drdre completed the #ALSIceBucketChallenge. @Eminem, @SnoopDogg and @kendricklamar, you're next."

The infamous "Rap God" claimed that he would indeed accept the Twitter call-out, although several fans were skeptical:

Eminem: "@drdre I accept your challenge, Andre."

Well, fellow emcee and Slim Shady's "hypeman" Denaun "Mr" Porter made sure he stuck to his word!

During Eminem's "The Monster" tour pit-stop in his beloved hometown of Detroit, the MMLP2 superstar was soaked alongside stunning songstress Rihanna. Right onstage:

Shady then challenged Porter, music producer Rick Rubin, and of course, RiRi. Her response?

"Detroit, what you think? Should I do it? I'm from the islands - I don't do this ice sh*t! This ice sh*t doesn't work for me."

Ha. But the 26-year-old Barbadian beauty was put under pressure when Eminem's band started playing Vanilla Ice's rather ironic hit, "Ice Ice Baby."

So, she did it:

What an awesome surprise for "The Monster" crowd!