In the second grade:

Me: Shut up, you're stupid.

Classmate: Hey! I'm telling on you.

Classmate: *raises hand*

Me: No wait stop.

Me: No I'm sorry.

Me: Please come on dude.

Me: Pleeeeeeaase I'm sorry stop omg.

Me: *nearly in tears*

Me: I'm so sorry please don't tell her I'm sorry.

Teacher: Yes?

Classmate: Can I use the bathroom?

Classmate: *turns and looks deviously at me*