1 definition by SneakyHorse

Verb: To carry out a task with hilarious and/or disastrous results.
Timmy pulled a Joyce when he went to his exams without any pens, then finding out he had no exams to begin with.

Michael Joyced up when he relieved his bowels in the department store display toilets, only then to make it worse by telling the manager that he had broken said toilet as it would no longer flush.
by SneakyHorse January 15, 2012
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