With no single famous scene attached to the phrase, this clip has survived online because the wording is so universally usable. Short reaction sounds travel well across memes, edits and chat threads, where a plain admission of feeling bad can stand in for a longer explanation. Creators reuse it whenever a character or creator looks defeated, hungover, ill or simply done with the day, and its brevity makes it easy to loop, caption or drop into a montage without slowing the pace.