snakes

 If you're crawling through the grass

and something bites your arse

Its an adder

If its brown sometimes black

with zigzags down its back

its an adder

if it looks mainly green

or brown in-between

its a grass snake

If you scream you can check

does it have dots and specks?

Its a grass snake

now if its small and grey

i have something to say

Its a slow worm

if you're crawling through the grass

and something bites your arse

you will know