A Thanksgiving I cut a hunk of my thumb off while slicing potatoes ("I don't need the hand guard for this slicer--I'll be fine!"

). My family has an annoying tendency to bleed for quite a while; I certainly got blood all over my shirt and pants (it dripped while I was seeing how bad it was). Bled through a few paper towels as well.
I've found that the trick isn't TO bleed on things. It's NOT TO bleed on them.
Also, blood looks weird after it's dried. I once got a good-sized drop of blood on a Pelican case for some geophysics equipment. I was able to observe it dry. In the end, it looks remarkably like mud.