The idea of a Batman squirtgun? I can live with that.

The unfortunate position of the trigger? Well, it follows from the design. I guess I can live with that, too.

But the anal refill hole?

squirt gun with anal refill

That’s a bored toy designer seeing just how far he can take the joke before his bosses notice and fire his ass. Somewhere out there he’s saying (probably in Chinese) “I still can’t believe they actually made it, and shipped thirty thousand units!”