No wuckers ;) I didn't know either, I only really checked because I was curious if they had a completely different etymology and only happened to be spelt^ and

No wuckers ;) I didn't know either, I only really checked because I was curious if they had a completely different etymology and only happened to be spelt^ and used similarly. (^or if, like spelt and spelled, the same root had just come to be used in two ways for the same.) So, note to self, slither is not a noun! (Except to mean limestone rubble apparently, but I think I can ignore that.)