That is, again, what I thought. My literal words being "Wtf? Mary Poppins, this isn't prom night. It's Disney. Lets make this Bert/Mary relationship SUPER obvious."
But if you look in back, some of the cast does it too.
"Don't worry, it should never be seen. It's comparable to Britney's hoo-ha." - being.jeremiah in response to the High School Musical 2 logo
"You look fantastic, all you need are high heels, cake and a dream." - Amneris