The Smirking Face shows a half smile with raised eyebrows and eyes looking to the side. It usually signals smug satisfaction, flirtation, or the sense that someone knows more than they are saying.
People use it after suggestive remarks, playful boasts, and comments with an obvious double meaning. It can make an innocent sentence sound flirty or mildly dirty. In an argument, it may read as condescending, so context matters.
More from DoesWhat: free calculators ยท emoji meanings ยท quick answers ยท the DoesWhat blog