Jay-Z, Justin Timberlake, Nas and Timbaland are just having a laugh in the studio. What about? We'll never know, because we're not invited to these casual meetings of the minds. Lucky for us, however, Roc Nation A&R man and photographer Lenny Santiago was there to snap a photo.

But all is not lost: We need your help in captioning this "new Rat Pack" photo. Let us know what you think caused the laugh in the comments. See our suggestions below the image.

justin timberlake jay z nas timbaland

"We are sooooo rich!"
"Kanye? Kanye who?"
"Timbo, did you get that keyboard from FAO Schwarz?"
"So, who's going to be Sammy?"

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  • Justin Timberlake, Jay-Z

    FILE - This Feb. 10, 2013 file photo shows recording artists Just Timberlake, left, and Jay-Z performing at the 55th annual Grammy Awards in Los Angeles. On Friday, Feb. 22, the pair announced their 12-city Legends of the Summer tour beginning July 17 in Toronto and ending Aug. 16 in Miami. (Photo by John Shearer/Invision/AP, file)

  • Justin Timberlake, Jay-Z

    FILE - This Feb. 10, 2013 file photo shows recording artists Just Timberlake, left, and Jay-Z performing at the 55th annual Grammy Awards in Los Angeles. On Friday, Feb. 22, the pair announced their 12-city Legends of the Summer tour beginning July 17 in Toronto and ending Aug. 16 in Miami. (Photo by John Shearer/Invision/AP, file)

  • Justin Timberlake, Jay-Z

    Justin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

  • Justin Timberlake, Jay-Z

    Justin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

  • Justin Timberlake, Jay-Z

    Justin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

  • Justin Timberlake, Jay-Z

    Justin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)

  • The 55th Annual GRAMMY Awards - Backstage And Audience

    LOS ANGELES, CA - FEBRUARY 10: (L-R) Singer Justin Timberlake, actress Jessica Biel, singer Beyonce and rapper Jay-Z attend the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)

  • The 55th Annual GRAMMY Awards - Backstage And Audience

    LOS ANGELES, CA - FEBRUARY 10: (L-R) Singer Justin Timberlake, actress Jessica Biel, singer Beyonce and rapper Jay-Z attend the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)

  • The 55th Annual GRAMMY Awards - Show

    LOS ANGELES, CA - FEBRUARY 10: Singers Justin Timberlake and Jay-Z onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)

  • US-MUSIC-GRAMMY AWARDS-SHOW

    Justin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)

  • The 55th Annual GRAMMY Awards - Show

    LOS ANGELES, CA - FEBRUARY 10: Singer Justin Timberlake (L) and rapper Jay-Z perform onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)

  • US-MUSIC-GRAMMY AWARDS-SHOW

    Justin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)

  • US-MUSIC-GRAMMY AWARDS-SHOW

    Justin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)

  • US-MUSIC-GRAMMY AWARDS-SHOW

    Justin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)

  • The 55th Annual GRAMMY Awards - Show

    LOS ANGELES, CA - FEBRUARY 10: Singer Justin Timberlake (L) and rapper Jay-Z perform onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)

  • US-MUSIC-GRAMMY AWARDS-SHOW

    Justin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)