In a Wimpy Day is a fan made Friday Night Funkin mod that reimagines Diary of a Wimpy Kid characters in rhythm battles. Friday Night Funkin began as an open source rhythm game released in 2020 and grew through a huge modding community. The Wimpy track by Cótiles became the mod's signature song, shared in gameplay videos, fan animations and short edits online. Its short, loopable length and instantly readable cartoon mood explain why creators still reuse it for gaming content long after the mod first circulated among FNF fans.