This Imgur post by user Exsupervillain shows two pictures of a wedding invitation so non-traditional that it scared the daylights out of some of the recipients. That's because the invitations look like court summons.
Apparently, Exsupervillain's aunt is marrying a sheriff, so to honor the occasion, they sent out these wedding invitations that "nearly gave everyone a heart attack."
To make the invitation/summons look more real, the couple even used envelopes that say "Urgent" on the outside. That lets the person receiving the letter know that A. it's a very serious matter, or B. the letter is from Foreigner.
"Haha, you sure got me, sheriff! Now let me just pick my stomach up off the floor and congratulate you guys!"