i am unsure if that is autotune, bad sound quality, or if ezra is singing in ewe (a language spoken in ghana. i can sing some songs in ewe. just putting it out there). rolling stone described this once as a "frenzied punk scramble" --- i guess, but throw in some ska flavor and autotune. these boys just fuck with genres like nobody's business.
if you are feeling all "WHAT DA FUCK" after calif. english i'm sure holiday will make you feel better. pretty classic with that perfect quick energy. when i saw them play this live i didn't realize how brilliant it was - i saw them do it acoustic, and electric that pickup out of the break sounds much better.