My year nines are immature. This isn't exactly a revelation as children are allowed to be immature sometimes, it goes with the territory. On occasions though it makes life difficult.

'Sir, what's a prostitute?'

'Oh, ask your Mum.'

'You saying my Mum's a whore?'

Later in the same day with my year tens:

'Sir Fred drew a penis in my book'

'Is that yours Fred?'

Unfortunately that question could be interpreted two ways, what I meant was did he draw the picture, but unsurprisingly my pupils took it the other way.

All in a day's work.