This is the Szczęśliwy icon for Windows 10. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.
There is a circle with medium bluntness of a line. There is a curved line in the bottom showing the mouth. There are two dots above the curved line showing the eyes. Both the line and dots are centered in the circle.