Girls' Generation's youngest member Seohyun made a random passerby's day, perhaps even year, on 'One Night of TV Entertainment'.

On the January 9th broadcast, the entertainment show, co-hosted by Sooyoung, aired a feature on Girls' Generation's "I Got A Boy" comeback.

They were filmed inside a stretch hummer limo while on their way to the interview with 'One Night of TV Entertainment' and Seohyun was given a surprise mission to wish a random man a Happy Near Year by giving them an autographed "I Got A Boy" album. When the random man received the gift, the lucky guy looked as if he couldn't believe his own eyes.

Check out Girls' Generation's appearance on the show below!

The random guy segment occurs around the 5:10 mark: