What is lash anyway?

[Knittycat]

I've had a couple of chickens lay lash over the past couple of years. But today I got to wondering, just what *is* lash and why do chickens lay it?

 

[Toast n Jelly]

I've had a couple of chickens lay lash over the past couple of years. But today I got to wondering, just what *is* lash and why do chickens lay it?

I've never heard of that expression sorry