Okay so my favorite thing about this that kinda gets lost in translation is that the word ガーリックトースト is read as “gaarikku tousuto” which means the final お is just an extension of the last sound
TL;DR In English this tweet would just be
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA GARLIC TOASTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT