Noun. Something you have when you're having sex with someone that is very dull in bed because of lack of knowledge and skill. A boregasm is of little intensity and is oftentimes acheived by your own assistance.
"I'm horny as a toad. I'll call David... He isn't very exciting but I'm desperate. He's good for a boregasm or two if I'm lucky. "
Man: "Was that 5 minutes of heaven for you too?"
Woman: "Yeah. I was able to have a boregasm, if that's what you're asking."