Park your car, man.
Lock them both in the trunk of the car for an hour, then open it up and see which one of them is happier to see you.
Any kind of car if it goes over a bridge.
A. Put the remote control between his toes.
Being stuck in an elevator with the Doublemint twins.
On top of three children.
They both get ditched in the park
You park, man.
Park in it, of course.