So last night I was doing some work while my girlfriend was sitting across the room reading. Suddenly — out of the blue — I got turned on. Really turned on. Almost immediately I went over to her and started kissing her, doing things I know get her hot until we spent the rest of the night doing the dirty together. Afterwards, I remarked at how random that was — I had a lot of work to get done and wasn’t really in the mood before. She then informed me that she was horny and just used her “trick.”

What was the trick? For the past several months, whenever she did almost anything sexual with me, she made sure to put her hair up. Slowly but surely, she built up this connection that whenever she reached back to put up her hair, I would expect something sexy to happen. She had done this so effectively that apparently she could get me horny by just putting her hair up — no foreplay or anything up to that. I was floored. I immediately remember her doing this to me in public all of the time, and I would never have made the connection if she hadn’t fessed up.

TL;DR: My sneaky bitch of a girlfriend conditioned me to give sex on demand