Be careful, your slip is showing in the presentation.
Будь осторожен, твоя ошибка становится очевидной в презентации.
Definitions
This phrase means that someone is unintentionally revealing something they intended to keep hidden, such as a secret, a mistake, or a personal flaw. It originates from the idea of a woman's slip (an undergarment) being visible beneath her skirt, which is considered a minor social faux pas. Figuratively, it refers to any situation where someone's true feelings, intentions, or errors become apparent to others.