SEE ALSO: Girls' Generation's appearance teased on next week's 'Superman is Back'

On the upcoming broadcast, Lee Hwi Jae got the 'superman' families together for his twins' first birthday in Jeju Island. Upon Tablo's advice to feed babies milk or water to prevent their ears from ringing from the flight, Lee Hwi Jae passed over Suh Joon to Jang Hyun Sung's care and fed Suh Un milk immediately upon entering the plane. But as soon as Suh Joon started to cry, Lee Hwi Jae switched children and began to feed Suh Joon instead. Seeing how scatterbrained his father was, Suh Un took his own bottle and drank from it by himself, bringing a smile to Lee Hwi Jae's face.

Also stay tuned for Girls' Generation's visit to Sarang's house when it all happens on the 30th at 4:30 PM KST!