Do you have to be funny?

In some ways, yes. It's not your normal slap-stick fart joke Adam Sandler comedy, it's got an actual story to it. It's a very good movie and I enjoyed it very much.

Because they're just cool like that.

Because every one has a different sense of humour and we each find different things funny. Thus, another thing in life that makes us different.

Because it has a good sense of humor