Let's make this birthday one to remember.

45 years old (Born on March 31, 1980)

Happy Birthday, Karl Klug! You're tougher than the defensive line you dominated since your NFL debut back in 2011 for the Tennessee Titans. Whether it was sacking quarterbacks or crushing opposing linemen's dreams, you've always shown you're anything but a gentle giant.

Remember when offensive lines trembled as you'd burst through for another epic tackle? Those thrilling moments made Sundays spectacular and kept fans cheering loud and proud. Even though helmets are off today (and cake is definitely allowed), here's wishing that this year's celebrations hit harder than one of your signature tackles—minus any yellow flags of course! Happy birthday, champion!