Is Lap-Sitting Cheating?

So, after a night of clubbing in the city, a bunch of us pile into my girlfriend's car and head back to Queens, a 40-minute drive minimum. She's the designated driver, and I end up in the back seat squeezed next to four people with one of our female friends on my lap. When we're dropping everybody off, the girl stumbles out giggling, gestures with her hands a foot apart, and tells my girlfriend, "Your boyfriend has a big dick." Our friends laugh, and one pal "helps" by blurting, "Free lap dance!" Har. Har. I thought that was the end of it until we get home, and my girlfriend has this furious look. She goes, "I can't believe you let that skank give you a lap dance!" WTF? Now, full disclosure, that girl happens to sport an epic ass. And the whole ride she was shifting around and bouncing up and down with each bump. So is it possible that maybe I got a woody? Okay. But even if for the sake of argument I did, that's just a natural human reaction, right? Not according to my girlfriend, who says no, I should have been able to "control" myself and not let that girl "use your cock as a pogo stick." She went on to say that there is "no room for infidelity in this relationship." Wait, what? Since when is someone sitting in your lap cheating? Am I the asshole here, or is my girlfriend insecure and maybe a little nuts?

Is Lap-Sitting Cheating?
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