It's all about your phrasing.

Mom just went out to pick up some bacon so she could have a BLT (baconbaconbacon). As she's on her way out, I get a 'ding!' in my head.

Me: Do you want me to make cake?
Mom: No. (She is, of course, dieting.)
Me: Are you utterly opposed to me making cake?
Mom: ...No.

So now she's getting the two things I need for cake. :D Hooray, cake!