a well-known tongue-twisting
nursery rhyme. A tongue twister is a
sequence of words that are difficult to pronounce without making
a
reference to the famous tongue-twister in
English entitled "Peter Piper," the
context of which is as
follows / 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, / Where's the peck of pickled peppers Peter Piper picked?