make your self a garter

what I mean is take a strip of velcro and make a strap that you can secure your pantleg with or in a pinch use electrical tape beats gettin drug off the bike by a man eating chain.
I wonder why it does that, pant leg in the chain and it wants to keep turning until it drags you off?
Or am I remembering it wrong?!!
Do use the guards I carry scars from no chain guards. took 20 stitches to close up my leg when I was a kid.