
This exercise instructor must either be on goofballs, or she's getting her sports training from the
Laughing Yogi or the
Zombie Aerobics Instructor. I'd totally laugh if I were her student — but not with her.
Remember
the laughing yogi?

Those
viral marketing campaigns are getting more and more creative. Skype, a free video-call service, schemed up a way to get people to engage with their product, pay a giggle forward, and put the laughter-is-contagious theory to the test. It's called the laughter chain.

Even the grumpiest folks can't resist cracking a smile at the sound of a high-pitched baby belly laugh. I'm sure the babe below brought that kind of giggle to the table, but we'll never know because this laugh is in slow-mo. The result?

Laugh On, Laugh Off. . .We've seen it done before— a 'lil diva who could
turn her frown upside down and back in a blink.