History Main / DontComeAKnockin

!!'''Examples:'''

[[AC:Commercials]]

[[AC:{{Film}}]]

[[AC:{{Live-Action TV}}]]

* Subverted in ''[=~Mama's Family~=]''. In the episode "There Is Nothing Like the Dames", Thelma is trying to impress a small group of snooty upper-class women with a backyard dinner so they will let her join them. Unfortunately, Vinton and Naomi's trailer sits in the driveway, an obvious eyesore. On top of that, during one scene, the trailer starts rocking, horrifying the women... until Thelma finds out that Vinton was only trying to fix a broken table leg.

[[AC:VideoGames]]

[[AC:WebComics]]

[[AC:WesternAnimation]]

* Referenced in ''{{Animaniacs}}'', where the Warners drop in on Dr. Scratchensniff and his date. Eventually, they start bouncing around, causing the car to jump as well. Outside, you see a mother forcibly turn her young son's gaze and push him away. [=*=]mwah![=*=] [[GettingCrapPastTheRadar G'night Everybody!]]

[[AC:RealLife]]

...[[IfYouKnowWhatIMean when this van's a rockin']]!

A form of GRatedSex where a vehicle or other small enclosed space is shown moving vigorously to show that its occupants are engaged in [[IfYouKnowWhatIMean vigorous activities of their own]].

* ''{{Seinfeld}}''. In one episode, Jerry gets a van from an old friend. Elaine suggests that Jerry should outfit it with one of the troponymous bumper stickers. Also, near the end of the episode, Jerry and George catch George's parents [[IfYouKnowWhatIMean rockin']] the van.

* The book ''Easy Riders, Raging Bulls'' states that during the production of ''BonnieAndClyde'', Warren Beatty's Winnebago-turned-into-trailer used to "rock like a ship" whenever Beatty wasn't working.

** Subverted previously when out of the plethora of other cars, his ice cream van was the only one that '''wasn't''' rocking!

* {{Seinfeld}}. In one episode, Jerry gets a van from an old friend. Elaine suggests that Jerry should outfit it with one of the troponymous bumper stickers. Also, near the end of the episode, Jerry and George catch George's parents rockin' the van.

* Subverted in ''[=~Mama's Family~=]''. In the episode "There Is Nothing Like the Dames", Thelma is trying to impress a small group of snooty upper-class women with a backyard dinner so they will let her join them. Unfortunately, Vinton and Naomi's trailer sits in the driveway, an obvious eyesore. On top of that, during one scene, the trailer starts rocking, horrifying the women... until Thelma finds out that Vinton was only trying to fix a broken table leg.

A common subversion is to then show that the vigorous activity in question was not the one you were thinking of.

!!Examples:

* There was a GettingCrapPastTheRadar version in ''TwoStupidDogs''. The two dogs went to a {{Drive-In Theater}}, and ''every car around them was rocking''.

* Subverted in ''{{WhipIt}}'', the dad's car is seen doing this, accompanied by loud shouts from the dad. Turns out he's watching a particularly exciting football game.

* {{Titanic}}: In a car that's on a ship.

!!'''Examples:'''
* The TropeNamer is, of course, the classic bumper sticker slogan: "If this Car/Van/etc...'s A-Rockin', don't come A-Knockin'!"

* A less explicit version is in ''GrabbedByTheGhoulies'', where the hero is sometimes chased by walking coffins that conceal plump, amorous vampire girls. If one catches him, he's yanked inside, and the coffin rocks for a few seconds (With ♥s drifting out and everything) before letting him go.

* ''BigFish'' has a rocking trailer, but it turns out there's just a HellHound inside.

* A van is rocked this way in the ''{{MST3K}}'' feature ''{{Hobgoblins}}'', much to the hosts' disgust.
-->'''Tom Servo:''' They made love in their Chevy van, and that's not all right with me.
* The famous [[http://www.youtube.com/watch?v=XSWS2XWtOcU Peugeot 207 commercial with ladybugs]].
* ''PushingDaisies'': In the second episode, there's a flashback of the VictimOfTheWeek, a car safety tester, meeting his girlfriend, a promotional model for the same car company. This is followed by the display car in the showroom rocking back and forth, with the windows steamed up. Bonus points for the car being on a turntable.
** Also referenced in the second episode of season 2. Chuck notices the bumper sticker "Mimes do it with imagination" on a van just before they open it to find a dead mime. Emerson comments that the bumper sticker should have said "If this van's a-rockin', I'm being murdered."

* Occurs in the opening of ''{{Idiocracy}}''.
* Somehow, this was able to slip past the radar in TotalDramaIsland, in this case Owen said 'boat.'
* Used in the film version of HarryPotterAndTheGobletOfFire in a carraige. Snape comes a knockin'.
* Subverted in ''[=~Mama's Family~=]''. In the episode "There Is Nothing Like the Dames", Thelma is trying to impress a small group of snooty upper-class women with a backyard dinner so they will let her join them. Unfortunately, Vinton and Naomi's trailer sits in the driveway, an obvious eyesore. On top of that, during one scene, the trailer starts rocking, horrifying the women... until Thelma finds out that Vinton was only trying to fix a broken table leg.
* Subverted (though not in [[DoesThisRemindYouOfAnything the usual way]]) in ''QuestionableContent''.
-->[[AC: [[RobotBuddy Pintsize]]]]: If the router starts a-rockin', don't come a-knockin'!
-->[[AC: Pintsize]]: ...Actually, if the router really does start a-rockin', do you think you could weight it down with something heavy? I don't want a cable to come loose and disconnect me.

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* Subverted in ''QuestionableContent''.

* Subverted in ''{{Mama's Family}}''. In the episode "There Is Nothing Like the Dames", Thelma is trying to impress a small group of snooty upper-class women with a backyard dinner so they will let her join them. Unfortunately, Vinton and Naomi's trailer sits in the driveway, an obvious eyesore. On top of that, during one scene, the trailer starts rocking, horrifying the women... until Thelma finds out that Vinton was only trying to fix a broken table leg.

* Used in the film version of HarryPotterAndTheGobletOfFire in a carraige. Snape comes a knockin'.

* Pretty much all sex—I mean "Whohoo" done in ''TheSims''.

''Examples:''

* A less explicit version is in ''GrabbedByTheGhoulies'', where the hero is sometimes chased by walking coffins that conceal plump, amorous vampire girls. If one catches him, he's yanked inside, and the coffin rocks for a few seconds (hearts drifting out and everything) before letting him go.