There is a hill on one of the group rides I do where someone has painted in white letters, on the road, at the very top of the hill, the word OUCH. The hill is now known as "ouch hill". Thus far, it is the only hill I have ever had to get off my bike and walk up. Each week the ride reverses itself so that one week the ride goes down "ouch hill" and the next week the ride goes up "ouch hill". I only go on that particular ride if I know its a downhill week