2. when someone is so overwhelmingly thorned that he or she breaks out in nervous, sometimes uncontrollable laughter
Guy: "My girlfriend farted in the car on the way home and I pretended like I didn't hear, but we could both smell it."
Friend: "HAHAHA that's a thorngasm."
2. The doctor asked me if I was sexually active in front of my mom and I had to answer yes. He then proceeded to ask me all storts of questions about my sex life. My mom just stared at me in disbelief the whole time. I almost had a thorngasm.