Let's make this birthday one to remember.

55 years old (Born on November 21, 1969)

Happy Birthday to Ken Griffey Jr., the man whose swing was smoother than a jazz solo and who made center field look easier than eating birthday cake! From scaling walls like Spider-Man, hitting 630 career home runs, to that unforgettable backward cap style—Junior defined baseball cool in the '90s.

Your legendary smile lit up Seattle brighter than stadium lights. Whether it was your iconic Home Run Derby performances or those gravity-defying catches at Kingdome, you gave us countless memories we still replay today. Here's hoping your birthday is as timelessly awesome as your highlight reels—and may all gifts come with backwards hats included!