will i go to jail ....?

[Erbo]

I cannot judge whether or not you will go to jail for that, but I don't think it is a good idea. It will certainly not be a good idea if you are underage of sexual consent. In most countries that is 16 or 18 years old.

Do you know your crush outside FB? If not, it might as well be a 40 year old pervert who you are talking to.

When you would be old enough and you would still consider sending pictures like that you always must keep in mind that they might end up somewhere on the internet. So make sure you or your surroundings are not recognisable on those pictures.