Kufr

Telling a child that the new born child will bring stuff from jannah

Q: A long time ago, my parents told my young self that when my little brother comes into this world he will be able to bring stuff from Jannah that we want like a toy, and told us to make dua for it. We did eventually get it from our parents but I'm worried that my parents doing something like this is considered kufr and me and my parents joking about how I was really gullible about it is also kufr. I believe they were trying to make me have a closer connection with Allah.

Calling a woman wearing the niqaab a "ninja"

Q: If someone (Muslim) calls a niqabi a "ninja" (not in a derogatory way or to mock niqab, nor to make fun of the person for wearing niqab), will it be kufr? 

What if the niqabi didn't think much of it and just passed it over as a joke, because she believes that the person was just joking and not trying to degrade her or something. 

Basically, a ninja can be considered good or bad, but it depends on what the ninja does (apparently).

Muftis using words like "one may risk his imaan through doing such and such action"

Q: Can you please explain what scholars mean by each of these in kufr related queries if they respond with the following:  

1. "One is risking their iman if they do this." 

2. "One may risk their iman if they do this." 

3. "This is dangerous" 

4. "Any act which has some resemblance with shirk is haram, and can take you out of Islam." Does "can take you out of Islam" here means it definitely does take you out or there's a chance it does? 

5. "Recite kalimah in abundance.", do they mean recite it as a precaution or to keep repeating kalimah frequently to save ones self from accidental kufr? 

6. "This act borders with kufr or borders on kufr". 

7. "This act is borderline kufr".