I started fooling with your invention last night, and I kind of got caught up in the excitement.
Presley picked up a guitar and started fooling around.
I'd already warned you about the dope angle, way back when Frankie started fooling with the boat and all.
They started fooling with each other one summer, when we were nine or ten.
"You start fooling with that, and you're going to start having some failure."
"I would have noticed if someone went into this lot and started fooling with your bike or any of the cars."
At least Larry wouldn't start fooling with any keys!
When frustrated with difficult maneuvers, the athletes often start fooling around.
Louise: You should have thought of that before you started fooling around.
Rachel took her camera out and started fooling with it.