The Smirking Face emoji ???? first showed up in Unicode 6.0 way back in 2010 and was added in Emoji 1.0 in 2015. It has a yellow face with a foxy facial expression that highlights a slight smile, and raised eyebrows that are looking sideways. More often than not, this emoji shows a sexual connotation.
If you are using the Snapchat application, you can see this emoji next to your contact, which means that he or she snaps at you often, but you do not always snap them back.
The Emoji Smirking Face ???? is perfect to use to flirt with someone.