Leg Related Clue

Once Lucas regathers his scattered wits and quits gawking at the ensuing destruction across the street, he rushes down the stairs two steps at a time.

Since Miss Masher and Miss Chievous both noticed his odd behavior, they look over as well. Miss Chievous hisses, whereas Miss Masher says “Oh shit…” under her breath.

‘Ugh, going through the two crosswalks is gonna take so long, should I just run right through the damn intersection? Bah, the accidents it would cause will lose more points than I save by rushin’ over, yeah?’

[Most likely. If you really want to hurry, you should just jump over the traffic.]

‘...Wait, what?’

[...It’s not only your arms that have super-strength, you know. Even without practice, your endurance will ensure you won’t hurt yourself, but your proprioception will probably help you out enough that it won’t matter.]

‘HOLY FUCK WHY DIDN’T YOU EVER MENTION JUMPING SOONER!? THIS IS GONNA BE SO AWESOME!’

[...]