This is how you do it.

Ruby (daughter of K. and A. Brantly of Fort Worth) and Ollie (son of J. and S. Brinker also of Fort Worth) are pleased to demonstrate the proper use of a jump-a-roo.

Ruby: First, you have to get your feet underneath you.
Ollie: Like this?
Ruby: Yes, that's right. Now you hold on tight... bend your knees...

Oh, and don't forget the best part. These lights flash when you do it right.

Now, JUMP!

Ruby: That's it! Isn't it fun?!

Ollie: Wow! It sure is! Thanks, Ruby!
Ruby: Any time, pal. Any time.