Amazing Advances in Words Written Across Someone's Ass

The other day, I see a couple college girls walking down Beacon Street. As I get closer, I realize one of 'em's wearing sweatpants with something written across the ass. Only, I can't quite make out the words; I only know it's not "Juicy" or "Pink" or "Free Trade Now" or any of the things I'm used to seeing scrawled across a woman's rear end. So I speed up and, as I get within a comfortable, non-stalking distance, I see the word "indefatigable." Huh? Across your ass on a pair of pants? This has got to be some private joke, I take it. Or a bid by English Lit Major chicks to remind us that they're pretty fucking hot, too? Either way, I had to look it up.