Airrection
When the zipper on your pants buckles and bulges out making it look like you have an erection, when in fact it is just the zipper trying to ruin your social experience.
girl "Well i was talking to him, but he started to get a boner, so i got the hell outta there."
guy friend "He probably just had an airrection"
guy friend "He probably just had an airrection"