Proximity Alert
When a penis gets hard from merely being in the same vicinity as a woman, even when there is no sexual cue whatsoever.
Similar to the sensors in sci-fi movies getting set off when another space ship comes into range.
Similar to the sensors in sci-fi movies getting set off when another space ship comes into range.
She gave her boyfriend a hello hug at the restaurant. He covertly put her hand on his hard on. She laughed and said "proximity alert!"