It is slightly possible you will never have a pet giraffe, but just in case it should happen, I've got some great names for your long-necked tree-trimmer.
Over the past few days you might have noticed that some of your friends have changed their profile picture on Facebook to a giraffe. Why? Because they got the riddle wrong so they have to change their picture to a giraffe for three days, at least they did get eaten by Gollum.