Me checking my inbox at 9:30am...
7:28 New Campus Policy printing now costs 5-cents per page
8:34 Re: New Campus Policy - April Fools! Printing is free.
9:14 Re: Re: New Campus Policy - Printing is still free, for now.
delete, delete, mark spam Absolutely.* Does that shed any light, here? They're not claiming it is a triviality, instead, quite specifically, they are claiming the funny part is chaos and the number of people who reacted differently.
* modulo marking the IT department as spam