Details: This poster shows a yellow smiley face. At the top it says 'Have a nice day.'
A smiley, or happy face, is a stylized representation of a smiling human face, commonly represented as a yellow (many other colors are also used) circle (or sphere) with two black dots representing eyes and a black half circle representing the mouth. 'Smiley' is also sometimes used as a generic term for any emoticon. The variant spelling 'smilie' is not as common, but the plural form 'smilies' (the plural of 'smily', not 'smiley') is commonly used.
This poster is usually printed with a thin white edge border.