If I have could a FBF (Fictional Best Friend), it would be Spongebob Squarepants from the TV show Spongebob Squarepants. He also has his own books.
Why, you ask... because he's funny. He'll laugh anytime he's happy and can cook Krabby Patties! Just give him his spatula, a frying pan, and the ingredients. Bam! there's a Krabby Patty. You can also fit him in a luggage and check him in! When you get to your destination you just find your luggage, bring him home, take him out of your luggage, and there you have it! Spongebob.
We are going to be FBFFs.