There is a joke that four sculptures fart. What are the four sculptures?

The first sculptor touched his nose to show his sense of smell, the second extended his arm to show his direction, the third hit the ball to show self-defense, and the fourth hand covered his eyes to show shyness.

A young man pointed to four sculptures and asked the staff what this meant. The staff explained: "The first sculptor touched his nose to represent his sense of smell, the second one stretched out his arm to indicate his direction, the third one hit the ball to indicate self-defense, and the fourth one covered his eyes to indicate shyness."

The young man said, "Oh, I thought it was:' Who farted?' He put it there. "Not me!" I put it. "