"Back to the Future" fans have a pretty uh-mah-zing sense of humor, and they use the internet to flaunt it.

From memes to poking fun at Doc Brown and Marty McFly's Hill Valley adventures, every fan has something witty to say about the best time-travel movie ever made. Here are 15 times that the internet and "BTTF" fans were a match made in LOL heaven.

"Back to the Future 30th Anniversary Trilogy" is available to own now on Blu-ray & DVD.