ヾ(๑╹◡╹)ﾉ"

Well first you gotta download the Japanese keyboard (anyone of them) and then you press the face icon which kinda looks like this: ^_^ and then press the arrow key that points up and then look for Lenny face ( ͡° ͜ʖ ͡°)

＼【// ・ω・\\】／