A blonde gets a job as a physical education teacher of 16-year-olds.

She notices a boy at the end of the field standing alone, while all the other kids are running around having fun kicking a ball.

She takes pity on him and decides to speak to him.

"Are you ok?" she asks.

"Yes," he replies.

"You can go and play with the other kids you know," she says.

"No, it's probably best I stay here," he says.

"Why's that sweetie?" says the blonde.

The boy looks at her incredulously and says, "because I'm the goalie!"