120906 Playful SNSD Jessica poked YoonA's buttocks?

We may always see her as SNSD's Jessica who is gorgeous and charming but we also shouldn't forget the playful side of hers.

Taken from the Korea-China Festival which was held last August 25th, here's SNSD's Jessica who was caught in the act of poking YoonA's buttocks. She might have been bored, that's why she decided to play a prank on YoonA. ^^
Check out this funny and adorable moment below~