Buy Me A Mink

Kurt was going out with a nice girl and finally popped the question.
"Will you marry me, darling?" he asked.

Lisa smiled coyly and said, "Yes, if you'll buy me a mink."

Kurt thought for a moment and then replied, "Okay, it's a deal, on one
condition."

"What is that?" Lisa asked.

"You'll have to clean the cage," Kurt replied.