Celery Man is a character played by Paul Rudd on Tim and Eric Awesome Show, Great Job!, the Adult Swim sketch series known for deliberately awkward and surreal comedy. In the sketch, Rudd appears in a celery costume and delivers ordinary lines in a completely straight voice, which made the character a cult favourite among fans of the show. Short clips of his greetings later circulated online as reaction sounds, where the polite wording and strange appearance give creators an easy way to signal an uncomfortable or overly formal morning hello.