How much do you know about Spongebob Squarepants?

Do you reeeally think you know Spongebob? Have you seen all the episodes? Find out!

1 During Spongebob's song in the episode "To Love A Patty" there are some rocks in the backgound that appear to spell a word. What is the word?
2 What happens in "Mermaid Man and Barnacle Boy V" ?
3 Ok, now for an easier question. Spongebob's laugh is best described as... what?
4 In the episode "Not Normal" Squidward tells Spongebob to be more normal. What makes Spongebob turn back to his spongey self after becoming permenantly normal?
5 How many signs are on Squidward's bathroom door in the episode called "Choir Boys" and what do/does it/they say?
6 What is the name of the episode where Spongebob meets his idol?
7 This is sort of a general knowledge question. Why is the episode where Spongebob, Patrick, Plankton and Squidward make a band called "Krabby Road"?