Let's make this birthday one to remember.

77 years old (Born on July 29, 1947)

Happy Birthday, Dennis Stewart! From your unforgettable portrayal of Leo "Craterface" Balmudo in Grease, you've taught us all that even the toughest guys can rock leather jackets and slicked-back hair with style. Your iconic drag race against Danny Zuko remains legendary—proving once and for all that nobody messes with Craterface!

Here's hoping your birthday is smoother than a ride in Greased Lightning and filled with more laughs than Rydell High's dance-off. May you continue to inspire generations to embrace their inner rebel (and maybe avoid racing cars down Thunder Road). Cheers to another year of timeless coolness!