i can confirm this !! the only time i can open jars is when i’m on my period due to the increase in testosterone. i have to open all my jars during that week or else!!! its really inconvenient because the second i’m off my period, i can’t even manage to do something as simple as unscrewing my toothpaste! so i guess being a dirty vagina fetishist comes in handy since my future cisscum wife can help me open jars when she’s on her period !!!!