Why do I keep getting e-mails offering me a larger pen1s and other sexually explicit relationships?

I obviously don't need a larger pen1s, since I am a woman, and I haven't logged on to any porno sites or anything like that, so how do I keep getting this junk?Why do I keep getting e-mails offering me a larger pen1s and other sexually explicit relationships?
You do not have to go into porn sites. I have never been on a porn site in my life! You get them because of other websites you have gone into. Somehow the porn sites attach to different sites and you automatically start getting porn emails. I just keep hitting the spam button. It is embarrassing when your kids see this!!! Hope this helps!!