Federer celebrates birthday with fun cake, Wonder Woman

Seven-time Cincinnati champion Roger Federer turned 37 last week, which begs the question: How does a GOAT celebrate his birthday?

"I had a super-funny cake they created for me," Federer told Blair Henley at the Western & Southern Open. "I was on the cake playing tennis with my wife and all four kiddies. I remember my calf was so big. I was really proud of my calf muscles on the cake."

Federer then explained that, afterward, the whole family transformed into something resembling The Incredibles, but even better.

"They wanted me to dress up as Superman, and Mirka was Wonder Woman, and then all the kiddies were Supermans and Wonder Womans, too," he said. "Oh my god, the kids looked so cute."

"(Mirka) looked amazing. I looked like a Superman coming from the beach," Federer added.

Playing Cincinnati for the first time since 2015, Federer is into the round of 16, where, weather permitting, he'll face Leonardo Mayer on Thursday night.