Urban Dictionary: :!

3.	:!
	Jimi hendrix smiley. Used when talking about jimi. MV: Yo, this song is soo hendrix :! w00t! buy :! mugs & shirts jimi hendrix joint cigarette smiley by jetru Apr 10, 2009 add a video
1.	:!
	Used to imply sarcasm and irony. I'm so stoked for this math test today :! buy :! mugs & shirts emoticon smiley face sarcasm irony facetious by 71456768744896 May 26, 2010 add a video
2.	:!
	also a smily for omg see !_! :! i want ircoppage :! :! :! buy :! mugs & shirts by Kyle Biddle Aug 2, 2004 add a video