no matter how well you know your friend the answer is NO. for two reasons: 1 stealing is wrong and 2 you never know if your friend may have a disease or medical problem you could contract by wearing her panties.
On a good day, a boy will steal 3-4 pairs of panties.
You probably have underwear (panties) fetishes. This means that you probably like to play around in them and can get sexually excited by feeling, smelling, tasting, and/or wearing underwear.
If she is okay with it and you are okay with it there should be no problem.
Only if she feels comfortable about it.
Only if he is wearing them
no
There is technically no circumstance where it is ok to steal. There are circumstances where people are forced to do so, but it is not morally right to steal.
Of course it is. In fact, a 14 year old should wear underwear or panties. They support the rear and also shape them up so they do not become rather, well, saggy. So, yes, it is very much okay for a 14 year old to wear underwear or panties.
So what amount does make it 'okay' to steal? If it is less then $10 is it okay to steal? It is a crime to steal. The amount is not important, it is the moral character that is demonstrated that makes it bad. Your employer is entitled to fire you if you steal even less.
Crotch-less panties.
Sure if it doesn't bother you.
Out of respect for your brother, it is wrong to try to flirt or take his woman. Out of respect for any woman, it is wrong to steal their underwear, if they wanted you to have their underwear they would give it to you.