Ladies and gents, we've been saying Rupert Grint's name wrong all along. It's actually Roblert Glint.
(But not really.)
The joke is all part of an MTV "After Hours" webisode with actor Joe Manganiello from True Blood. The webisode mocks an infomercial about a video for hard to pronounce celebrity names. Rupert shows up as a "celebrity testimonial." Watch the funny clip below!
(Note: Rupert's segment was recorded while he was on set, in costume as Cheetah Chrome for CBGB.)