There's nothing like the start of the NFL season that transforms people into freaks ... and TMZ Sports has the pics that give you a firsthand look at all that!!
Check out the female Bengal, the goat Jet and the Joker Saint ... proving NFL Sundays can turn any average Jane and Joe into a pigskin psycho.
The best part?? The season is only in Week 3 -- which means every one of these nuts' Super Bowl dreams are still alive!!
Yes, even you, Bills and Cardinals fans.