Michael Phelps [1] gave an epic rendition of Eminem [2]'s "Lose Yourself" on Lip Sync Battle [3]'s first live show on Sunday night. Dressed in a black hoodie, Boomer's dad [4] gave the camera his meanest mug as he channeled his inner Slim Shady. Aside from dropping the mic (literally) at the end of his performance, the Olympic swimmer took home gold once again by beating out the likes of all-stars John Legend [5], Olivia Munn, and Terry Crews. If this is any indication for what's to come on season three, we definitely can't wait until it premieres on Oct. 12!