Because they can make a dinosaur walk and eat a human:
And a cowboy riding a bull:
Because they can make a choo-choo train actually CHOO-CHOO:
And drive a car across the field:
Because they can unite lovers:
And have a dude go field-surfing:
Because they brought Quidditch to life:
Because they lifted a car over their head:
And galloped as Epona from Zelda:
Because they made this guitar:
...and this dancing alien:
Because they created a giant-sized Tetris...
OH HECK, just watch the entire video game–themed show:
Because the entire band came together to MOONWALK...
And because they form this beautiful word at every game and it makes you feel at home.
In conclusion: OSU marching band is indeed TBDBITL.