You post a caption on your class blog, and link it to the Schools of Puns using the 'linky' tool.
The Headmaster will select the three captions he finds most amusing - and you vote for your favourite.
The winning pupil will be entered into the Headmaster's 'Punning Roll of Honour', and receive a signed certicate.
Any pupil aged 4-13 may enter...and teacher may, too!