Is Masturbation a sin?

[Catavenger]

I did a search for is Masturbation a sin:

I got a response here : I'm not going to post it here but the gist is that it is a sin: https://www.christianity.com/wiki/si...ion-a-sin.html
When I saw that it was written by a woman, (Heather Riggleman) my response:

If I had known that a woman had taught that I wouldn't have wasted my time reading it. For the Apostle Paul said in FIRST TIMOTHY CHAPTER TWO: Verse Eleven & Twelve:

11 Let a woman learn quietly with all submissiveness. 12 I do not permit a woman to teach or to exercise authority over a man; rather, she is to remain quiet.

I tried to post that through the Facebook link but apparently she didn't make a plug-in for that.

What do you think. Is it a sin? Are woman qualified to teach men (especially in Spiritual Matters?)