The "Σ(･o･;)" emote, also known as the "Bit Sweat" emote, is typically used to convey a sense of nervousness, embarrassment, or anxiety. The emote features a face with wide eyes and a sweat drop on the forehead, suggesting that the person is feeling uneasy or uncomfortable. It is commonly used in online communication, particularly in chat rooms and social media platforms, to express a range of emotions related to stress or discomfort.