What is an “NFL”?
Non-Fermi liquid, don’t ask me to explain, that stuff goes right over my head.
https://en.wikipedia.org/wiki/Fermi_liquid_theory#Non-Fermi_liquids
“NFL” is the code for threads where freepers can virtue signal that they have no interest in football, but display an interest by posting on the threads. This is called ‘cognitive dissonance,’ or ‘Look at me, Ma!’