Getty Images
This time, R&B singer Lloyd drops by Cahill's crib and joins the Internet celebrity for a mimed rendition of his single 'Dedication to My Ex (Miss That),' featuring Lil Wayne and Andre 3000.
Lloyd pops into frame about 14 seconds into the hilarious clip, which opens with Cahill -- who suffers from the rare disorder Maroteaux-Lamy syndrome -- mouthing along to Weezy's loverman intro: "Hey y'all, I came to talk about this girl that had my love, see."
From there, it's a contest to see who can out-mug the other. Lloyd does a fine job of dancing around and selling the tune's lovelorn lyrics, but it's Cahill who steals the show, tackling Andre 3000's verse.
Lloyd isn't the first performer to get upstaged by Cahill. The teen's previous duet partners have included 50 Cent, Jason Derulo and Katy Perry.
Taylor Swift Dominates at 2013 Billboard Music Awards
Tim McGraw's 'Superstar Summer Night' Special to Air May 19
Tim McGraw Stops Atlanta Show to Help Ailing Fan
Carrie Underwood 'Goats' Hunter Hayes With Blown Away Tour Prank
Jennifer Hudson Performs 'Inseparable' With 'American Idol' Winner Candice Glover
PHOTOS: Tornado Aftermath Leaves Trail Of Destruction
Blake Shelton Will Return for Season 5 of 'The Voice'
PHOTOS: This Is The Best Response To Abercrombie CEO Mike Jeffries We've Seen Yet
Miguel and Fan Are 'Okay' After Crazy Kick at 2013 Billboard Music Awards
Tornadoes Strike Oklahoma
Stone Temple Pilots Tap Linkin Park's Chester Bennington as New Singer
Oklahoma Senators Face Difficult Options On Disaster Relief
Beyonce Releases New Anthem, 'Grown Woman'
Police END Search For Susan Powell
Trace Adkins Named Winner of 'All-Star Celebrity Apprentice'
JODI ARIAS WANTS LIFE
PHOTOS: Tornadoes Wreak Havoc On Central U.S.
CBS Pulls 'Mike & Molly' Tornado-Set Finale
WATCH: Mom's Emotional Reunion With Son After Tornado
PHOTOS: Tornado Devastates Moore, Oklahoma
WATCH: Tornado Victim Finds Dog During CBS Interview
PHOTOS:Eva Longoria's Almost Wardrobe Malfunction At Cannes
Justin Bieber BOOED While Accepting Award
LOOK: The 14 Most Endangered Heritage Sites In Europe
Grossed Out Student Finds "Worm" In His McMuffin
LOOK: Kid Knows Exactly Where She Stands
Guess Who?
15 Incredible Cat Photobombs
Mila Kunis And Ashton Kutcher Put Their Romance On Display
WATCH: Tornadoes Rip Through Central U.S.
Student Expelled, Charged With Felonies For Same-Sex Relationship
Stefon Marries Anderson Cooper In Final Show
LOOK: Dolphins Make Rare Underwater Find
