The emote "Σ(￣。￣ノ)ノ" or "Inviting To Sleep" emote is typically used to convey a sense of exhaustion or sleepiness, often accompanied by an invitation to join in sleeping or resting. The raised arms and tilted head suggest a surrendering to fatigue or a desire to be comforted. It is commonly used in online chats, forums, and social media platforms.