6 of us were going out to dance one evening. I had to sit on top of one of our guy friend’s lap in the backseat, Henry. One of the other guys had to sit up front because he was too tall to fit with 4 of us squeezing in the back since my husband was driving. This evening I was wearing a basic thigh high black dress that contoured to my ass but was looser on my torso letting my boobs hang freely. Henry was a nice guy and I think mutually there was never anything sexual between us. I was thinking he might get hard if I sat on his lap but I didn’t notice anything during the ride. Upon arriving, I turned around to see him get out and notice a slight tent on his crotch. He must have been hiding it well. Henry was the only one driving back with us at the end of the night.