Hitch hiking - How to Cope WIth Mud

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 if ever you’re standing

before a big mud patch

and you need to cross it

but  you’re wearing the wrong shoes,

it’s possible to stick out your thumb

and so attract the attention of

a passing hippo

who will give you a safe ride on its back.

However, as payment

it will bite off your thumb,

so you can only ever have

two hippo rides in your life,

and if you take them both,

you’ll need to cope without thumbs.