I just raked myself a good one with the pawl of my little 4-harness loom. I'm cleaning in my computer room (where the loom lives) so things are moving around. I managed to whack the pawl with my thigh as I swung around in my chair - 6 nice furrows about 3" long and deep enough that they're still bleeding nearly an hour later. I'll have a hell of a scar.
Who said weaving isn't dangerous? :)
Wooly Hobbling off for more bandages