Revealing mistake: When Rocky first stands up in the tank still bandaged, he doesn't get up directly underneath the colour machine, which he is going to grab onto moments later, because he can't see; you can see him trying to shuffle discreetly into the right position.
Continuity mistake: While riding his motorcycle around the lab during the "Hot Patootie" number, notice how Eddie's black eye and cut changes sides in two of the flipped close-ups. (00:44:30)
Visible crew/equipment: Just after Brad says, "I really love the skillful way you beat the other girls to the bride's bouquet," as 'Dammit Janet' begins, twice it cuts to a shot of the "church caretakers" standing idly in front of the doors. In these two shots their marks are visible at their feet; there are outlines on the ground around their shoes, which vanish in following shots. (00:07:50)
Continuity mistake: When Janet is fainting after Frank comes down the elevator, she is lifting up one hand. In the close-up it's the other hand. (00:24:25)
Continuity mistake: When Frank-N-Furter steps out of the pool, the heart 'tattoo' on his right upper arm (deltoid area) is smudged and runny, but is near perfect in a following shot.
Continuity mistake: During the dinner scene, there's a party hat on the back of Janet's chair. It disappears in one shot. (01:05:35)
Audio problem: During 'Hot Patootie', just before Eddie plays the sax, he can be heard singing, "Bless my soul," but his mouth is not in sync. (00:42:55)
Visible crew/equipment: On his motorcycle, when Eddie begins to ride to the lab's upper level, in the first shot from behind him, the shadow of the camera/equipment is visible on his back as he is moving. (00:44:30)
Continuity mistake: When Ralph and Betty drive off in the car, the positions of the surrounding family and friends noticeably change between shots, such as the elderly couple who stand near the church sign.
Continuity mistake: During 'Hot Patootie, as Eddie and Columbia canoodle on the floor, when the guests dance on the upper level their positions in the line change between shots. (00:44:10)
Continuity mistake: At the beginning of Columbia's solo in "The Time Warp" she is sitting on the jukebox and wearing her gold glitter hat. Then, during the refrain, we see the hat on the floor near the jukebox, sans Columbia. Immediately after the refrain, Columbia has her hat back on as she does her tap dance. [There's about 9 seconds that Columbia's off-screen that she could have retrieved it, and about 4 seconds Magenta and Riff Raff are off-screen and end up next to Columbia and could have picked it up and given it to her, but there's no reason for it to have been out in the middle of the floor to begin with.] (00:22:10)
Continuity mistake: Before Frank-N-Furter kills Eddie, his painted black eyebrows are curved with pointed angles above his eyes, but when he explains to Rocky about the mercy killing, his painted eyebrows have a rounded arc shape to them.
Continuity mistake: In the scene where Brad and Janet first talk with Frank in the lab (before Frank's speech beginning with 'Tonight, my unconventional conventionalists...'), Frank makes a comment about how Brad is "so dominant." At that moment, Brad closes his robe but does not button it. However, when the camera switches angles, it is buttoned. (00:31:33)
Deliberate mistake: In the lab, when Eddie is riding his motorcycle on the upper level in the wideshots, the stunt double is rather obvious despite the added padding, due to his slimmer face and non-chunky arms.
Revealing mistake: After Frank-N-Furter pulls the lever to immobilize Janet, Brad and Dr. Scott, Janet's feet are positioned close together when Frank-N-Furter shouts, "Planet Schmanet Janet,", but when she screams, "Stop!" her supposedly immovable feet now have a space of about 2 ft. between them. (01:10:50)
Continuity mistake: At the beginning when Brad and Janet get the flat tyre and it's raining, Brad says "Didn't we pass a castle back down the road a few miles?" before they get out of the car to go to the castle. If the castle was a few miles back, both of them should be soaking wet, and the paper Janet put over her head should have been soaked not long after they got out of the car. After they enter the driveway of the castle they get increasingly wet, but they are barely damp before this despite walking some distance in the constant rain. (00:13:25 - 00:14:25)
Revealing mistake: In the laboratory, when the tank is unveiled, fishing lines are visible strung across the top of the tank (probably to keep the red sheet from dipping down into the water). Watch closely in the reverse shot after Magenta and Columbia throw off the sheet. (00:33:45)
Continuity mistake: When Brad and Janet first enter Frank-N-Furter's laboratory, Janet's shirt is buttoned when she is hanging on Brad. When she twirls around to stand on his other side, her shirt opens during the turn, but as soon as she stops, it is buttoned up again. (00:30:35)
Continuity mistake: As Magenta is undressing Brad she throws Columbia his pullover - twice. (00:28:20)
Continuity mistake: The words 'love' and 'hate', which appear on Eddie's knuckles in the close-up when he mounts his motorbike, disappear in other shots where we see his hands.
Chosen answer: It means they are going to have sex. The bride got her groom and the groom is going to get laid.
Bruce Minnick
She got her ring, he'll get his ring... I'll leave the rest to your imagination.