Hosts Mariel, Toni, Bianca asked: Who is Big Brother?

MANILA - "Pinoy Big Brother" hosts Mariel Rodriguez, Toni Gonzaga and Bianca Gonzalez were stumped when they were asked about the identity of Kuya on the popular reality show.

In a video uploaded on YouTube, the three hosts were asked seven questions like "What's the one thing that you wouldn't do for Kuya?" and "What's the best advice you've received?"

But for the last question, former "Kris TV" head writer Darla Sauler asked them: "Who is Kuya?"

"Hindi ko alam" was Rodriguez's immediate reply.

Gonzaga, for her part, denied persistent rumors that director Lauren Dyogi is really Big Brother.

"'Yun lang ang masasabi ko. Kahit anong pilit ninyo, hindi talaga," Gonzaga said.

"Sa 10 taon, kilang-kilala namin si Kuya pero di namin siya mabigyan ng mukha," she added.

"Basta ako si Kuya is everyone's parang dream kuya, someone who will guide you in life, someone who will help you grow and mature, makes you realize thing and makes you have fun," Rodriguez said.

Watch their answer, which starts at the 9:10 mark.

Over the weekend, Hashtags members McCoy de Leon and Nikko Natividad and teen singer JK Labajo were named as the first celebrity housemates of the show's newest season "Lucky 7," which will premiere on July 11.