Fibonacci Fap February is a satirical internet challenge that serves as a high-difficulty sequel to No Nut November and a structured alternative to Destroy Dick December. Unlike other challenges that use linear growth, this one follows the Fibonacci sequence, where each day's 'quota' is the sum of the previous two days. Starting manageable with 1 on the first and second days, the numbers quickly spiral into astronomical figures, reaching 317,811 by the 28th of February. The meme typically highlights the absurdity of the math involved and the physical impossibility of completing the challenge, often using reaction images to contrast the easy start with the chaotic, exhausted finish.