The way Ned and Cookie got Crubbs was since Crubbs loves to play lottery, they decided to make a tape that shows that he wins the lottery and he falls for it!
Gordy: (serious looking) Look, I want no part of some plan to get Vice Principal Crubbs back for all his evil April Fooling. Now I've got toilets to scrub and no time for goofing off.
(Cookie and Ned are shocked!)
Gordy: April Fools!
Mr. Sweeney: (To Ned) Why can't you apply yourself like this in my classroom!
(The dog steals the student evaluations, Mr. Crubbs shows up)
Mr. Crubbs: Hey Sweeney, do you have your student evaluations?
Mr. Sweeney: Uh! uh! No, well you see, uh. a dog ate them.
Mr. Crubbs: Not laughing. I want them by the end of today or I'm gonna pull out my teacher evaluations and make some adjustments to yours.
Seth: Isn't it weird how April's Fools Day is always in April?
Ned: ...and that bad excuse is?
Moze: My grandma is in the hospital because she twisted her ankle getting out of bed.
Cookie: Ha! That's the most ridiculous thing I've ever heard.
Vanessa: I can't study tonight, my grandma twisted her ankle getting out of bed and now she's in the hospital
Ned: And make your excuses realistic, because no one is gonna believe that a dog ate your homework. (a dog runs by and snatches Ned's homework)
Ned: A dog ate my homework!
Moze's first kiss on the show was on Excuses, with Seth.
Tip#913.AFD: If you don't want to get fooled on April Fool's Day, keep reminding yourself it's April Fool's Day.
Tip#793.PRK: If something sounds funny - it's a prank.
Tip#302.FPL: Keep your fools playful not hurtful.
Tip#145.EX: Always have your excuses pre-planned.
Tip#145.KEB: Keep your excuses realistic.
Crubbs: I'm going to open a detective agency in Miami!
A reference to the crime drama Miami Vice which lasted from 1984 to 1989, in which Crubbs was inspired by.