I recall reading a letter to the editor of Philadelphia Weekly about 10 years ago or more where someone complained of the "arboreal impediments". I had to laugh at that one.

If memory serves me right, they were complaining about the trees & narrow sidewalks coupled with the bumpy terrain of the actual street on Quince Street between Locust and Spruce (In my opinion, happens to be one of the most charming blocks in the city).

So, every time I cut through that block, my internal dialog says "these arboreal inpediments!" and I smile.