Peter Piper picked a peck of pickled peppers,
A peck of pickled peppers Peter Piper picked.
If Peter Piper picked a peck of pickled peppers,
How many pickled peppers did Peter Piper pick?
(or “Where’s the peck of pickled peppers Peter Piper picked?)

This Nursery Rhyme is a tongue twister.
A “peck” is a measurement used for dried goods. It’s equal to 2 gallons.
A variant (from The Little Mother Goose, 1912, illustrated by Jessie Willcox Smith).
Read it rapidly!
Peter Piper picked a peck
Of pickled pepper;
A peck of pickled pepper
Peter Piper picked;
If Peter Piper picked a peck
Of pickled pepper,
Where’s the peck of pickled pepper
Peter Piper picked?