Wanna.B's Lina joked about the relationship she has with her younger sister (but sunbae), Girl's Day's Minah!

The girls will be on the upcoming 'Happy Together 3' episode's sisters special. Lina and Minah were a pair, while Park Eun Ji, Park Eun Shil, and Park Eun Hong (weather girls known for their former beauty pageant history) were also on the show as guests.

During the show, Lina revealed that her younger sister made her do a 90-degree greeting because she was her sunbae. Minah explained, "It was a joke. But when I went to go visit her waiting room, she really did it and surprised me." Jeon Hyun Moo asked Lina, "Did you do it on purpose to get back at Minah?"

Lina answered, "If I wanted to do that, it should've been where there were other people, but we were the only ones. If I tell Minah off for something, she says, 'I'm your sunbae' and gives me a signal to greet her by bowing so low my nose touches my knees." She also added jokingly that Minah had forbidden her from saying things, and that their family would suffer if Minah's image was wronged. She made everyone laugh by requesting the 'Happy Together 3' staff install a camera on their car back home to protect her.

SEE ALSO: "Haha had a vasectomy, but a fourth pregnancy?" Singer Byul shares concerns about expecting again

Make sure to tune into the episode later tonight!