Gymboree originated as a clothing retail store chain, but switched to a 'play and music' concept in 2016, before closing all stores amid bankruptcy in 2019.
In "80's Guy", Stewie attends tumbling class at Gymboree as Peter complains about the cost. After performing an awkward somersault attempt, the instructor opens up the floor for a 'rival baby,' and Doug performs a perfect tumble, to all of the parents' delight as Peter declares him his new son.