Just to take Mamas worrying seriously - if you (you in general, not you GraysonKelly) want to think safety, you have to factor in the weather, temperature, and how likely it is that you will be found, in addition to what might happen. If you ride in low temps or rain on a road where you could break a leg in a fall and it's not likely anybody will pass for several hours - and where your cell phone doesn't work (phew), then some of it makes sense. If the chances are high that somebody will come by within half an hour, or you can call for help, there's not much point in messing about with knives and matches.

But a little extra clothing or a poncho or a space blanket is probably the first thing you'll miss if you're immobilized for any period of time. I used to do Red Cross search+rescue exercises and was "the victim" on several occasions, and it's quite amazing how cold you can get in the course of just 20 min sitting on your hiney on the ground, even in summer. Well, summer here that is.

BUt how do you get bit by a snake on a bike, anyway?

PS. Duck, you're full of surprises :-P