A bouncing-on-the-knee rhyme about a dog trotting to Dover and clearing a stile in one leap. The final "jump" line is made for a sudden lift or tickle. Four lines and it's over almost before it starts.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
Leg over leg,
As the dog went to Dover;
When he came to a stile,
Jump, he went over.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition