In Suicide Squad (2016), the writing on Harley Quinn's baseball bat is a quote from her first appearance in Batman: The Animated series, specifically the Episode “Joker's Favor”. : r/MovieDetails
What do the words on Harley Quinn's bat say? - Quora
Harley Quinn baseball ütője | Funidelia
Baseball ütő - Suicide Squad - Replica Harley Quinn's Good Night Bat - NOB4568 - Metalshop.hu