Why won't my printer print GIFs properly?

Because you're not smart enough to print each animation then flip the pages?

Generally printers gifted to you are crap. Buy a real printer yourself like a man. 

did you make sure the gif was a moving one not just a picture labeled gif?

An animated GIF is a series of images being shown one by one very fast to show motion. You surely didn't expect your printer to print a GIF and that the GIF would move in the paper?

GIF is more like a series of images than a single image. You must first extract the image you want from the GIF, then save it (as a JPEG or PNG file), and finally print it.

depends on the gif, not the printer

A GIF that is a "movie" consists of multiple single images with almost no time between the change in image.

Printing only prints one of these images and there is no way your printer is going to print a moving image.

Some single images can also be in GIF format as opposed to Jpeg or PSD or some such.

Why do trolls keep asking the same stupid question. Maybe, they have too much time on their hands.

It WILL, troll.

It's probably an analogue printer...