(CNBC) — The union that represents American Airlines has demanded an investigation into a skit that surfaced over the weekend depicting cabin crew singing “Big Spender” to a man portraying a high-paying customer.

The video of the skit, which was performed on a small stage that featured American Airlines’ name and logo on a screen, was posted to Twitter by Jamie Larounis, who writes the Forward Cabin travel blog.

Note: Read our discussion guidelines before commenting.