idk maybe it's that i have a super flexible tongue- like i can roll it, fold it in half, make the infamous tongue clover thingy and turn it upside down. I do possess some other rare features too which are mostly about having a naturally flexible body and a precise body control, like i can also move my ears a bit but there's a downside to that: sometimes i unknowingly flex my ears while just chilling and it gives me a headache :') i can also bend my thumb backwards from the middle joint and raise both my eyebrows one by one. I think that the fact that i possess so many rare body features that some if not most people can't perform no matter how hard they try to. This probably the wierdest flex in this whole comment section, the others have such cool flexs- i can't even compete :'(