One of the few, probably.
Please tell me I'm not the only guy who didn't get it until I read the reddit comments...
And I'd imagine it's still awkward if you're chuckling and your girlfriend/wife goes "what's so funny about that!?" and then having to explain. At least for the not so open minded couples.
Also, if there's a story to tell about that last line you typed there you better start typing that out. I've got an appointment with my psych today and I could damn well use some schadenfreude after that.