Serena Williams shared hilarious footage of her daughter, Olympia, mistaking a tampon for a cat toy

• Serena Williams shared hilarious footage of her daughter mistaking a tampon for a "cat toy."
• "What's that?" Williams asked Olympia, 5, in the video.

Serena Williams shared hilarious footage of her five-year-old daughter mistaking a tampon for a "cat toy."

The clip, which Williams posted to TikTok on Wednesday, shows Olympia unwrapping a tampon and pushing it out of the applicator in the bathroom.

"What's that?" Williams asked her daughter.

Olympia replied: "A cat toy for Karma."

Williams held back her laughter at her daughter's response, making faces at the camera. However, when Olympia went off to get more, she had to intervene.

"OK, let's not play with too many of those," said Williams.

Williams captioned the video: "Who am I to steal her joy, it's a Cat Toy!"

The 40-year-old, who recently retired from professional tennis, and her husband, Alexis Ohanian, welcomed Olympia in September 2017.