What’s the worst case of mansplaining you have witnessed/experienced?

I’m wondering if anyone can beat me mansplaining to my girlfriend how to order inside at Chick Fil A.

“Oh yeah if you want Chick Fil A, you basically just go in there, tell them what you want, pay them, and they’ll give it to you.”

It was one of my worst mansplains ever, but she could see the mistake, politely acknowledged it, and I apologized… then we laughed at how stupid it was. As if she didn’t know how to order at a fast food restaurant.