A large rendering of male genitals on a high-school football field tainted graduation for one Florida school.

As a senior prank, one student used weed killer to create the shape of a penis and testicles, which took up most of the space on the field.

The student was caught and not allowed to walk with his graduating class.

To cover up the prank, the school used green spray paint and a large "2014" painting.

Read more: NBC 5