They shared funny joke.

Meaning: This means that two or more people told each other something that made them laugh.

Choice of Words: They refers to two or more people. Shared means to give something to someone so that both people have it. Funny means something that makes you laugh. Joke is a short story or saying that is meant to make you laugh. When you put them together, it means that two or more people told each other a story or saying that was meant to make them laugh.