For the record, when a parent asks “Who’s cleaning up the kitchen?” the wrong answer is “I don’t know.”Also wrong is the name of a sibling, any sibling, followed by a judgment of why they deserve to be the one to clean up the kitchen. All of these will get you the job of cleaning up the kitchen.
The only answer that might possibly on the slightest off-chance get you out of cleaning the kitchen is to say, “I’ll do it!” because then the parent just might possibly say, “That’s so nice of you to take responsibility! I’ll make your sister do it; you’ve done enough. Go have a cookie.” But this is only likely to happen if you volunteer immediately after your sister has made an ass out of herself by arguing that she shouldn’t have to clean up the kitchen because she did it yesterday.
It is far more likely that you’ll both clean up the kitchen, and I’ll eat your cookies.