God was angry with Pharaoh and punished him ten times. One day Pharaoh woke up and there were frogs all over the place.  Let us sing about the morning Pharaoh found the frogs:

One morning when Pharaoh woke in his bed,

There were frogs in his bed and frogs on his head,

There were frogs on his nose and frogs on his toes,

Frogs here, frogs there, Frogs were jumping everywhere.

haggadah Section: -- Ten Plagues
Source: Shir Ami preschool Haggadah