On "Friends", what does the Ross's old tiny t-shirt that Rachel likes to sleep in say on the front?

On Friends, Ross’s old tiny T-shirt that Rachel likes to sleep in says “Frankie Say Relax.” The shirt appears in the season-three episode “The One with the Tiny T-Shirt,” during the awkward exchange of belongings after Ross and Rachel’s breakup.

The slogan refers to “Relax,” the 1983 hit by the British band Frankie Goes to Hollywood. The group’s name is abbreviated on the shirt as “Frankie,” making the phrase a recognizable piece of 1980s pop-culture merchandise rather than a random slogan. Rachel says the shirt is her favorite thing to sleep in, while Ross insists on taking it back even though it barely fits him anymore.

The scene turns an ordinary piece of clothing into a comic symbol of their unresolved relationship. Rachel is annoyed that Ross wants the shirt back, and Ross’s attempt to prove that it still fits becomes increasingly ridiculous. Viewers sometimes remember the slogan as “Frankie Says Relax,” but the commonly reproduced shirt wording is “Frankie Say Relax.”