school boy error

Making the most basic of simple mistakes, worthy of ridicule, particularly when you should know better

School boy error!!
I just made a school boy error!
He school boyed!

by 4T Wizard December 6, 2004

school boy error

school boy error is when you make a simple yet stupid mistake. you feel stupid after you've done it.

"i just locked my keys in the house!"
"haha, school boy error!!"

by Jak Bucket September 3, 2005