My MIL (early 60s) is always using the "I don't know anything about that!"' line when it comes to tasks she thinks men should do.

Last night, my wife & I went over to her parents' house for dinner. FIL wasn't feeling well but was planning on replacing their car's flat tyre. Now, there are 4 sisters in total (1 being my wife), but MIL approaches me and says "since dad isn't feeling well, can you change the tyre? Do you know how to?" I laughed and said I don't." (I do. When it my car. Lol.) and was like "why don't you do it? It's literally changing a tyre. There are 3 steps-lift the car, replace the tyre and lower the car" And she was like "What? I can't do that! I don't do anything with the car!" She laughed and I laughed and jokingly called her pathetic. And then I returned to just sitting on the couch with the family. Because she's not stupid and I'm not her bitch.