Your fishnet stockings have a huge “Time Warp”-induced run in them, you may or may not have hit someone in the back of the head with a piece of toast, and your best friend got slapped in the face by a stranger wearing leather chaps. Just another typical outing to the Tivoli’s midnight showing of “The Rocky Horror Picture Show.”

“Rocky Horror” is a sci-fi parody rock opera about newlyweds Janet (Susan Sarandon) and Brad (Barry Botswick) who find themselves stranded at the castle of the “sweet transvestite from Transsexual, Transylvania,” Dr. Frank-N-Furter (Tim Curry). While castle-bound, Janet and Brad encounter a troupe of dancing Transylvanians, Rocky Horror—the Dr. Frankenstein-esque creation of Dr. Frank-N-Furter—and Meatloaf on a motorcycle. The plot, which includes sex, aliens and rock ‘n’ roll, may require Wikipedia’s assistance to fully understand.

Although the movie itself is entertaining, you haven’t really received the full “Rocky Horror” experience unless you’ve seen it in theaters.

“The costumes, throwing things around the theater, Meatloaf’s music videos and obviously Tim Curry. I love that every time I go, I figure out a new joke —either in the movie or what the audience screams back at the screen,” said senior Hattie Hiler, a six-time “Rocky Horror” veteran.

And don’t worry about being a Rocky Horror virgin. Senior Sam Bova, who won second place in her seventh grade lip sync show with a rendition of the “Time Warp,” attended a screening for the first time last year.

“At many other shows when you are a virgin, you have to do something super embarrassing on stage,” said Bova. “All that happened at the Tivoli was that the audience made a popping sound with their mouths to symbolize your cherry popping.”

“Rocky Horror” is the longest running movie of all time; it has consistently been shown in theaters since its release in 1975. And its fans are dedicated: Actors at The Tivoli perform the movie verbatim during its screenings, and male attendees brave the late-fall weather wearing nothing but gold spandex.

So, whether you want to understand next week’s episode of “Glee,” be in a setting where donning just underwear and a bra is socially acceptable or just spend a hilariously ridiculous (and not necessarily sober) night at the Tivoli, you should head on over to the Loop during one of the next three weekends. Plus, “There is always the chance that you will get to watch your friend receive an unwanted lap dance from a man in a gold speedo,” noted Bova.

What to bring:

Rice, newspapers, water guns, toilet paper, toast, a party hat and a deck of cards. The screen will prompt you when to use them. The Tivoli also sells bags filled with these props for $2.

What to wear:

The bare minimum. Lingerie, fishnet tights and cross dressing are encouraged. And don’t worry, there is no way you will be underdressed for the occasion.

What to shout:

Anything and everything, whenever you want. The two things to remember are that Janet is always a slut, and Brad is always an asshole.

The Tivoli is showing “The Rocky Horror Picture Show” at midnight on Oct. 22 and 23, Oct. 29 and 30, and Nov. 5 and 6. Filmboard is giving away free tickets to the Oct. 29 showing at the Clocktower on Oct. 28 at 5 p.m.