Duct tape is great, but for a really cool bandage, try Super Glue........
How about the super glue getting into your bloodstream? But maybe it sets so fast it doesn't get a chance to
I've never used it on a real bad cut.
Actually, Cyanoacrylate (super glue) is now used in hospitals instead of stitches. Of course, it's medical grade and is likel highly purified compared to teh Home Depot stuff. Of course, is duct tape sterile? Doubt it.
I have a friend with experience from Military and as an EMT tell me that he used to carry a few tampons around with him to stop bleeding from bullet wounds.