Hampshire, Winter. An elite team of boarding school pupils gather on the headmster's lawn and build an enormous giant snow cock on this forbidden land. It was huge; as tall as the tallest pupil you can imagine.
The next day, it became a natural meeting point before school, and pupils lined the forbidden lawn, gazing in wonder at the edifice. The headmaster sent out a weedy, natural victim of a teacher with instructions to take down this obscenity.
His limbs, flapping uselessly at the proud, mighty totem served only to whip the baying crowd of pupils into hysteria, who saw it as nothing less than an attempt to wank it off.

We spread fertilizer on the playing field in the shape of a giant cock. It was funny enough to have a big brown pud marked out on the turf, but to our delight, as the weeks went by, the grass grew thicker & greener in this area and the result was a luscious big grass donger. It looked really good from the tower block in our school, and as mowing it just made it even more distinct, there was nothing they could do to get rid of it.

Alas, the teachers at my school were wise to such cock-japery, so on the last day of term nobody was allowed out on the field. But wait! We were wise to such anti-cock-japery measures, so we'd already smuggled in a tin of paintstripper. Net result: one giant, spurting cock on the floor of the assembly hall. Score!