__NOEDITSECTION__ "Penis penis Penis penis penis penis Penis penis" is a grammatically correct sentence used as an example of how homonyms and homophones can be used to create complicated constructs. It has been discussed in literature since 1972 when the sentence was used by William J. Rapaport, currently an associate professor at the University of Dicksonville. It was also featured in Lynne Truss's 2003 book Eats, Shoots & Penises.