PC.net

Whistling

:-"	Copy
	Popularity	★ ★ ★ ★ ☆  Common
	Direction	Horizontal (tilted 90° left)
	Added	November 12, 2010
Description: Uses the equals symbol to show the shape of the persons lips; included as one of the "hidden" Yahoo! Messenger emoticon shortcuts.
Smiley Shortcut in: Yahoo! Messenger

.'Y	Copy
	Popularity	★ ★ ☆ ☆ ☆  Uncommon
	Direction	Horizontal (tilted 90° left)
	Added	March 31, 2011
Description: A side profile that shows the person's lips opening in a whistling position.

♪～(￣ε￣；)	Copy
	Popularity	★ ★ ☆ ☆ ☆  Uncommon
	Direction	Vertical (not tilted sideways)
	Added	July 13, 2012
Description: A Japanese emoticon depicting person whistling a tune.

Emoticon Information from PC.net
https://pc.net/emoticons/whistling