One-liner AdultsPhD chapters believe strongly in revision history.Every version has a past.Why it works: This wordplay is explicitly written for PhD and uses the subject vocabulary as the comic mechanism.Copy jokeSave▲ 0Topics connected to this jokeAdult CleanCleanCleverClever Jokes for AdultsCollegeCollege Puns for the ClassroomFunnyOne-LinerOne-Liners for AdultsPhDPhD One-LinersPhD PunsPunSchoolSchool One-LinersSchool Puns