Definitions by Assembled Alternatively

AIWFCIY 

The popular Christmas song from Mariah Carey "All I Want For Christmas Is You". Generally, the song that's always being played everywhere during the Xmas season.
Although it came out in 1994 it is still a banger to this day.

"Everyone is bumping AIWFCIY this season."

AIWFCIY by Assembled Alternatively October 2, 2021