I think the presenter was referring to the Django Pony -- Django's widely known but unofficial mascot -- and not trying to invoke a My Little Pony meme.

http://djangopony.com/

Adults can't have a sense of humor?

There's humor, and there's LCD pandering. Despite that, this submission did get me to try out Flask. Nice and straightforward to get started with, which is good because I'm stupid.

He didn't say that.

It's easy to make a boring but informative presentation. It is much more difficult to make a funny but informative presentation. Of course, if you have no sense of humor, I must assume you are a lost traveler from Boringland.

Really, drunken pony parties are 100% relevant to a talk about django. I don't think the slide deck would be complete without it.