Has anyone deliberately asked their t for something that they were 99.9% sure if not 100% sure it would not be possible for their t to fulfill the request? If so, why did you do it? What did you get from it? Did it harm the relationship or help you?

Short Background: I don't take getting told no very well - like meltdown worthy not well so I often don't ask if I think there is a 1% chance of hearing the word "no". I have been thinking about asking for something from t that I'm pretty sure... like really I'd say 100% sure but you never know you know so I'll say 99.9% sure that she'd say "no". I'm trying to figure out why I want to ask, it just feels in my gut the thing to do - to hear that "no" from her and to see what I do with it, how I respond to it. I don't want to hear the "no" because I've pushed her to the point that she has to push back.

Of course there is a longer background story here... I'm hoping I've given enough for people to understand where I am going with this.

I'm sure I'll talk to her about the whole thing before I ask my question - just looking for other's experiences or thoughts around this.