Lady Gaga Sings ‘Dick in a Box’ With Andy Samberg Before Wild Lonely Island Medley at ‘SNL 50’ Concert

Audiences at the “SNL50: The Homecoming Concert” were perhaps expecting Lady Gaga to sing one of her new singles for the long-anticipated occasion, or the musical kick-off for the weekend that will finish with the 50th anniversary special airing on NBC on Sunday.

The reality was Bradley Cooper — wait, no — that was Andy Samberg in a wig and a cowboy hat as Cooper with Gaga. The pair began by singing what started as a cover of the “Star Is Born” hit, “Shallow,” but it eventually detoured into “Dick in a Box.”

The comedic single became a staple of “SNL” history thanks to The Lonely Island featuring Justin Timberlake — who wasn’t in attendance on Friday night.

“Justin’s not here to do his parts!” Samberg exclaimed followed by Gaga responding, “Andy, Don’t be a bitch. I’ll do it with you.”

The star-studded “Homecoming Concert,” hosted by Jimmy Fallon, will also feature performances by Post Malone, Mumford & Sons, Jack White, David Byrne, Robyn, Eddie Vedder, DEVO, Brittany Howard, Chris Martin, Bonnie Raitt, Brandi Carlile, Jelly Roll, the B-52s, Preservation Hall Jazz Band and the Roots will also perform, alongside more recent additions Cher, Dave Grohl, Ms. Lauryn Hill, Snoop Dogg, St. Vincent and Wyclef Jean.