I think maybe this fear comes from my first experience in an airplane bathroom... in which I felt like a sumo wrestler in a Strawberry Shortcake house.
During this horrific occasion I was also changing the diaper of a screaming infant (on a "changing table" the size of a kleenex) who didn't know me from Adam and was clearly wishing death upon me.
She nearly got her wish.
Aaaaaanyway, narrow doorways.
They freak me out.
I also worry that every folding chair is going to cave under me and every seat belt is not going to fit across me.
Anyone else share my weirdly weight induced fears?