Prince Harry is having a bachelor party. You're invited; so is everyone else.

Hours after the fifth-in-line to Britain's throne and American actress Meghan Markle announced their engagement Monday, thousands of people signed up to attend "Prince Harry's Stag Do," a public Facebook event, almost certainly fake. More than 24 hours later, 34,000 people said they were "Going"; about 100,000 were "Interested."

There's a zip code for the event in case you can make it: SW1A 1AA London. That's Buckingham Palace, where the queen lives. It will take place over two days from May 10-12. A similarly fabricated event — Meghan Markle's Bachelorette Party — will take place on May 3. At last check, about 1,200 people were "Going" and another 2,100 were "Interested."

Both events were promoted on Facebook alongside a series of tonge-in-cheek memes.

"Bunga Bunga Prince is getting married!" said one, a reference to Prince Harry's reputation as a bad boy party animal. "Let’s celebrate with him!"

In 2012, the young prince famously grabbed international headlines after suggestive photos emerged of him playing "strip billiards" at a private party in Las Vegas. For years, British tabloids have published pictures of staggering out of London nightclubs.

Another meme directed at Markle said: "Our gal Rachel's getting married!
Let's celebrate with her!" Rachel is the character Markle played on the TV drama Suits.

Kensington Palace said Tuesday that the couple will wed in May at Windsor Castle.