Mind you this was sent to WB as a joke, the animtor did two versions… a normal one and a lweder one, the second was for "private use", but accidentally sent that over to WB for approval (and got his ears chewed off in return).

So it was never intended from a supervising standpoint.

Source: https://www.deviantart.com/bobguthrie/art/The-story-behind-once-and-for-all-451071979 straight from the artist himself.

Granted the artist is also a furry artist and is full into Lola being lewd…

Animation artists are actually huge perverts? And often do joke sketches or try and sneak stuff into their work when they can? What? Who could have ever guessed such a thing. Such a revelation will shake the world to its core, shocking everyone who hears it.