An easy solution to your emergency bandaging needs, without the pain of sticky tape in your arm hair.
Step 1: Scrape Up Your Arm
This is probably harder than it sounds, because you need to remember to get your hands/wrists out of the way when you fall. Falling while holding on to something (dinner, your child, bike handlebars, priceless art) can allow you to get a proper scrape on your forearm, elbow, or upper arm.
This instructable utilizes a fine example of road rash on the ulnar side of the left forearm just below the elbow.