An odd observation

So Tuesday night I was meeting with my spiritual group. I sat in a chair that I've sat once a week for years without any problems. But last night it pinched, Even after adjusting several times through the evening I could still feel it pinching between my legs. Today at work the chair I sit in nearly every day of the week did the exact same thing. Tonight at the threater I had the same problem. Can anyone else say its in my mind.