Of all things to play a joke on her about.

"But I couldn't tell whether or not you were playing a joke of some kind."

"If someone has been playing a joke on me it will not be well for him!"

All I've been doing for months now is playing jokes!

He was a really nice man, who would never think of playing mean jokes on Mark and me.

Our friends are good at playing jokes on other people.

"We are good friends, and I think he was just playing a joke."

"I think somebody played a good joke on all of you."

"Have some of you thought to play a joke on me?"

She almost thought he was playing a joke, but that wasn't his style.