Aqaaid

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).

Disposing of something with the name of Allah Ta'ala

Q: 

1. Is it permissible to dispose of something with the name of Allah Ta'ala written inside of it, if the writing is covered? 

For example, a copy has random pages where the name of Allah Ta'ala is written, but these writings are covered by other pages and covers of the copy. 

2. If not, then is one required to check every copy and mark over them so it cannot be seen? 

3. What other writings does one have to cut off (or just cover) before disposing?