What is the ‘Giraffe Riddle Challenge’ on Facebook

In case your wondering why some of your friends have changed their profile pics to a giraffe, we have the answer . . .

This silly riddle has gone viral on Facebook!

Here's how I've seen it posted:

You MUST message us what you THINK the answer is so you don't give the answer away in the comments!

If you're wrong you have the repost the riddle with the same instructions and change your profile photo to a giraffe!

I am PROUD to say I got it RIGHT!

How 'bout you?