Katy Perry dressed up like a clown and attacking some guy with a piñata stick was too much for young children– who were left in tears.

Katy pulled the prank for a music video.

The gag was shot at Knollwood Country Club outside L.A. for Katy’s “Birthday” video.

According to TMZ, Katy pranked a REAL 5-year-old’s birthday party and most guests had no idea they were getting punk’d. Children were crying. One woman stormed away, visibly upset.

In the video, a little girl says, “Mommy, I want to leave.”

Check out the video here!