Sam and Susan were invited to a costume party. Susan got costumes for both of them. However, Susan wasn't feeling well and Sam went to the party alone.

A few hours later, Susan began to feel better and decided to go to the party. She realized that while she knew Sam was in a gorilla suit, he had never seen her costume, and decided to go and see what he was up to while he was alone.

She arrived and observed him dancing closely with a series of beautiful women. She went to him and began flirting, and soon they were taking a walk in the woods alone. They then undressed in the darkness and had sex.

She got home before her husband and when he arrived, she was in bed. She asked him, "How was the party?"

He replied "Oh, the usual - you know I never have much fun at these things alone."

"Didn't you even dance?" she asked.

"No, I sat in the den all night playing cards. The guy I lent my costume to had a ball, though..."