Because, apparently, the fabric of space-time has a weird cousin, Quantum Bob, who loves to play the trombone during leap years.
And when he does, the laws of physics get a little wonky, and we're all stuck with weird, unexplainable events that make us question our sanity.
Nah, nope. You can't outrun a well-played trombone solo. It's not like trying to escape a bear in the woods – you'll just end up in a different, yet equally confusing, reality.
Ha! Like that's gonna happen. You think you can tame the unpredictable, reality-bending power of the trombone? Please, be our guest. Try, and you'll end up with a universe full of paradoxes.
Or, you know, it might just work. Who knows, right?
Don't. Trust us, you don't want to deal with that trombone-playing, reality-warping, sanity-testing entity.
Read about Quantum Leap Syndrome, a condition affecting those who've faced too many quantum leaps. Or, for a change of pace, read our Quantum Leap jokes.