Seniors at Prior Lake High School in Minnesota pulled off one heck of a senior prank by placing "mandatory vagina inspection" letters in the mailboxes of 50 students. 

I don't know how these kids got their hands on the school's official letterhead, but it's pretty funny.

You can see the letter & read more here:

http://www.buzzfeed.com/ryanhatesthis/high-school-seniors-pranked-their-school-by-mailing-fake-man