1. Its gotta be middle eye, the arm would fail at an inconvenient time, I can almost guarantee it. 2. Dry humping landmarks, I travel a lot, I don't even think the novelty would wear off 3. Screw it, walking around aroused all the time is sure to have benefits too... amirite? 4. Lactose Intolerance, get up a few hours earlier than normal. Get it out of your stomach afterwards and continue the day, I pass way too many streetlights daily for the other option to be viable.