Don't people realize clowns are scary?

I was going through some phonics flash cards with my two-year-old daughter. She was having a blast, and kept asking for more...until I came across this one...

She took it, looked at it for a moment, handed it back to me, and said, "All done."

So, why couldn't the manufacturer of these cards include something that was actually kid-friendly, like a cloud or a clock? The only explanation I can think of is that this was someone's idea of a sick joke.