The boys of VIXX got together to throw a surprise celebration party for member Hongbin's birthday!

Waiting in a darkened room, the idols threw Hongbin for a loop with a rowdy party and a special birthday cake festooned with candles.

SEE ALSO: Following Lee Na Young, Won Bin also expected to step down as the model for 'Maxim T.O.P' coffee, truly signaling a new era

Happy birthday, Hongbin!