Let's make this birthday one to remember.

46 years old (Born on February 22, 1979)

Happy Birthday, Maryke Hendrikse! Your voice has given life to Susan Test, the smartest (and sassiest) sister on Cartoon Network's Johnny Test. Thanks for making science experiments and sibling rivalry hilariously unforgettable—without you, who else would keep Johnny in check?

From your witty comebacks to those iconic moments of genius mischief-making, you've brought endless laughter into our lives. May your birthday be filled with fewer explosions than a typical day at the Test household—but just as much fun! Here's hoping this year brings even more success and joy; after all these years voicing Susan, you're still testing awesome!