Why afternoons

Hey João, why you cleaning in the afternoon?
Swapping out the washerman for the mop and broom.
You love to make those toilets sparkle and shine,
Scrubbing up the porcelain, feeling mighty fine.

Sweeping up the hallway, emptying the bins,
As soon as the late-day shift begins.
So tell me why, oh João, underneath the moon,
Why are you always cleaning on the afternoon?

Oh hey João, por que, oh por que, oh por que, me diz o porquê, você está limpando de tarde? Oh hey, oh yeah, oh por que, me diz João