Did you hear the joke about the Liberty Bell? It cracked me up! Don’t roll your eyes just yet – these Fourth of July jokes and memes are great party tricks to keep in your back pocket.

FRIEDMAN: Did you hear it? Someone interrupted her ... GREENBLATT: You cross the line when you use memes and images and order to threaten harm against a certain segment of society.

How did a minor Australian pop hit from 2009 turn into the very best video meme of 2017? Once you hear Bag Raiders’ furiously catchy “Shooting Stars,” you’ll kind of understand.

Biologist and author Richard Dawkins has told Newsbeat he's unhappy with how the internet has defined memes as "pictures with words". You might wonder what the 76-year-old has to do with them at all.