No introduction needed, just watch the adorkableness.

I want to pinch everyone's cheeks SO BAD. Dongwoo for singing It's Raining Men, Woohyun for going "shhh!" and popping out like an excited second-grader from behind that pillar, and Sunggyu for being so easily (and adorkably, and yeah, gotta admit it, ily) spooked. Noona loooooooooves you, you big dorks.

Big thanks to the fan who caught this and shared it!