How Do I Know When I'm Having An Orgasm?

O believe anyone who tells you that you WILL KNOW WHEN IT HAPPENS! Before I knew what an orgasm felt like i "thought" I may have had a few during intercourse, and how I was mistaken,  but when I actually DID have a REAL one there was no doubt in my mind that it WAS in fact an actual orgasm.  you feel it not just in your "privates" you feel it EVERYWHERE, its like if your body had waves but when they crashed within the walls of your skin they turn into bubbles but when the bubbles pop they release millions of mircoscopic tingling massage beads.  Well that's what it's like for me or at least the best I can describe it.  None-the-less orgasms are intense & cannot be mistaken with anything else not even a sneeze.  By the way this is from a females perspective, I dunno what an orgasm is like for a boy.