Trying to find a specific still of Bart looking cuatiously caught off guard.

So I'll let you know what I remember. It's within the first 12 seasons (that really narrows it down) where Bart is at school, in a very readied stance, like the bullies are about to bully him, but instead go after someone else.

I don't remember any of the quotes surrounding it. It's not when he has the utility belt (he's raggin on your cord), or when he's a nerd (he's trying to learn, get him!).

I spent 20 minutes on the frankiac searching everything I thought was related but came up blank.