[Intro: Spongebob]
Fun is when you... fun is... it's like... it's kind of... sort of like a... What is fun? I... let me spell it for you!
F is for friends who do stuff together
U is for you and me
N is for anywhere and anytime at all
Down here in the deep blue sea!
[Plankton]
F is for fire that burns down the whole town
U is for uranium... BOMBS!
N is for no survivors when you're-
[Spongebob]
Plankton! Those things aren't what fun is all about!
Now, do it like this
F is for Friends who do stuff to-
[Plankton]
Never! That's completely idiotic!
[Spongebob]
Here, let me help you...
F is for friends who do stuff together
U is for you and me, TRY IT!
[Plankton]
N is for Anywhere and anytime at all
Down here in the deep blue sea!
Wait...I don't understand ...I feel all tingly inside...
Should we stop?
[Spongebob]
No! That's how you're supposed to feel!
[Plankton]
Well I like it! Lets do it again!
[Spongebob]
Okay!
[Both]
F is for frolic through all the flowers
U is for ukulele
N is for nose picking, sharing gum, and sand licking
Here with my best buddy
[Both laugh in rhythm with song]