A character is walking along when he notices a window that is apparently open. He wonders aloud who left the window open as he walks over to close it, only to run directly into the glass, revealing that the window is so clean that it gave the impression that it was open. Or a character looks over at the kitchen area to see an open area so they run over to it, only to run into the glass again, revealing it to be a sliding glass door that also gave it the impression of being an open door.
This is a Comedy
trope where a character will mistake a clean window or a sliding glass door for an open door then run into the window or door when they try to go through it.
Anime and Manga
- A series of Windex window cleaner commercials featured a pair of birds who were musing about how said cleaner is so bright that birds could get hurt flying into the windows that were cleaned.
- Inverted in this Super Bowl Doritos commercial.
- In Hataraku Maou-sama!, while Emi is at a convenience store with her back to the entrance, an assassin lunges at her... only to smack into the sliding glass door.
- Over the Hedge: Verne and the other animals try to escape from Gladys' house after trying to get food from her house, only to run into a sliding glass door.
- Happens in the chase sequence at the beginning of Cats & Dogs. Buddy sees the cat he's been chasing sitting just outside an open door, dives at it...WHAM.
- Played straight in Battlefield Earth, when Johnny enters a long-abandoned mall and runs into a plastic display case, apparently not being able to see through the frosted, moisture-covered glass.
- In Antz, Z walks toward a sandwich in a picnic but ends up walking into the plastic wrapping, which he thinks it's Some Kind of Force Field.
- A frightened Nemo keeps running into the aquarium walls in Finding Nemo.
- In the 1967 Casino Royale (1967), archvillain Dr. Noah (Woody Allen), in his underground lair, meets up with his uncle James Bond (David Niven), and lowers a big sheet of invisible glass between them. When James sums up his plans for world domination as compensation for his feelings of sexual inferiority, Noah angrily steps forward - forgetting about the glass and smashing it to bits.
- In The Man with the Golden Gun, James Bond is trying to navigate Scaramanga's lair and walks into a clear glass wall.
- In the play What I Meant Was by Craig Lucas, a mother forgives her son for (among other things) pretending he didn't know her when she walked into a plate glass window at his grade school and broke her nose.
- On Modern Family, Claire is worried that a dog Phil's father brought will walk into the back door. The dog doesn't, but their son Luke does.
- In another episode, Cameron walks into the back door screen on Jay's home.
- iCarly: Spencer invokes this in the episode "iPrank." He pranks Sam and Freddie by having a clear, nearly invisible plexiglass wall placed in front of the elevator so whoever exited it would smack into it.
- The first clip in the Daisy Fuentes-John Fugelsang era of America's Funniest Home Videos to win the $100,000 top prize was security camera footage of this trope.
- In The Cosby Mysteries, a Femme Fatale tries to shoot Bill Cosby, only to discover he's standing behind a sheet of bulletproof glass he's set up in the room between them.
- In the Haven episode "Silent Night", the town of Haven gets trapped under a giant glass dome. Several birds and drivers crash into it.
- Inverted in this strip of El Goonish Shive. Ellen expected a window of a secure government facility to have glass and braced for impact when she was thrown toward it; it did not and she merely had to contend with a two story drop.
- Birds are prone to flying into windows because they don't know that they're actually glass, so they end up hurting themselves real bad.
- There are a few instances of birds having left clear impressions of their bodies on windows after flying into them (apparently due to residue from their feathers).
- One fatal real life example proved crucial to proving the existence of necrophilia among ducks.
- Several types of insects who follow the light-source (for an example, flies and bees) are known to repeatedly run into glass and they can even starve to death trying to fly through it even if there is an obvious way out of the house.
- Justin Bieber has walked into a glass wall in 2010 and 2013, suffering a concussion from the second incident.