"Sussy," short for "suspicious," is a term that gained popularity through online gaming and social media, particularly in the context of the game Among Us. In this game, players must identify impostors among them, leading to the use of "sussy" to describe someone who seems untrustworthy or is acting oddly. The term has since expanded beyond gaming, often used humorously in everyday conversations to point out someone or something that raises doubts or seems out of the ordinary. It reflects a playful way of expressing skepticism, especially in social interactions.