"My teacher told me..."

My teacher told me, “when you nod,

I know you’re paying attention,”

but when I nodded off, I got

an undeserved detention.

Now tell me, daddy, who’s at fault, -

I did just what she told me.

What gives her any right at all,

to punish me and scold me?

I’ll serve my time and I will not

do what I know is wrong,

but if she tells me I should nod,

should I not nod along?