Disclaimer....if you are a kid (under 18) or an adult who is feeling like a kid, do not try this at home. Also, I did not OK these acts of genius, but sharing it might help other parents of twins.
1. Toddler push car with both of them crammed into one seat
2. Radio Flyer Tricycle with only 2 working wheels: one sitting facing forward, the other facing backward
3. Razor Scooters with the handle bars lowered all the way down and they placed their helmets on the foot pad as a seat
Here's how it happens...all of it. One of them gets the idea to do it. She probably knows it's not a good idea. As a gut check she asks her sister. Who thinks it's a GREAT idea! A fabulous idea! So together they make it happen.
Isn't that how the movie Jackass got made?