Backstreet's back... with a guest! Backstreet Boys and Marvin 'Machine Gun' Kelly star in T-Mobile's Super Bowl ad, in which the boy band sings “Tell me why it’s America’s best network, tell me why Netflix is included, and lots of perks.” AJ McLean makes a blue-tongued-promise of a monthly free 7-11 Slurpee with T-Mobile (a real perk), comedian Druski sobs with joy at the suggestion that no one expects quite enough from their mobile carrier, and actor-influencer Pierson Fodé also makes a cameo.