Frogs

A family of frogs live under my hot tub cover.

And even though it says Bullfrog 

  And you seem quite content.

 The spa is not for you to enjoy.

So please remove your little webbed feet,

 That bumpy back and that smug look,

                        And remember that even though it says Bullfrog, it was intended for humans.

Ironic, isn't it?