140525 Girls Generation Jessica laughs at f(x) Krystal's toe strength on OnStyle's "Jessica&Krystal"

On May 24, On Style posted a video teaser of their new reality program onto its official Facebook page.

Jessica says “Let’s make a phone call,” and then she looks at Krystal and adds “With your phone.” Krystal picked up her own phone with her toes and gave it to Jessica, Jessica exploded into laughter. Krystal knew she was hilarious and couldn’t contain her laughter.