Judas window n. an aperture or glass pane that permits safe or surreptitious observation through a door or wall. Editorial Note: This is a variation on Judas hole, Judas trap, or just Judas. (source: Double-Tongued Dictionary)
Further reading
Judy from Huntsville, Alabama, recalls her stepmother’s words of encouragement: He that hath a horn to toot and tooteth it not, the same shall not be tooted. This faux-formal bit of advice goes back at least to the 1850s. A variation goes:...
The expression you look like death eating on a Nab means “you look terrible.” It’s a humorous elaboration of the idea of death, which refers to death consuming a dry, salty, peanut-butter-filled snack made by the Nabisco company...