for other uses, see Rosie (disambiguation)
Ernie christens Rosie.
Rosie is the name of Ernie's bathtub, first seen in a season 1 sketch.
When Bert asks why Ernie named his bathtub Rosie, Ernie explains that every time he takes a bath, he leaves a ring around Rosie, referencing the popular nursery rhyme "Ring Around the Rosie."
Rosie makes a rare print appearance in the 1982 book A Sesame Street Christmas, with her name appearing on the side.