emoticoaster 

The abbreviated form of 'emotional roller coaster'. Used to express moments of cascading emotional turbulence. The verb, to 'emoticoast' is also an acceptable usage of the term.

This week has just been a non-stop emoticoaster!

emoticoaster by xequals May 30, 2013

emoticonsternation

noun: The unpleasant surprise you get when you choose a seemingly harmless emoticon from the static image palette only to see it animate into something tasteless after you've chosen it and sent it.

Alternate:
noun: An emoticon that looks harmless when viewed in the static image palette, but provides a nasty surprise when you select it and send it by animating into something tasteless.

Imagine my emoticonsternation when that smiley face I sent to my mom turned out to be a bloody horrorshow.

I got fired when I accidentally sent my boss an emoticonsternation.

emoticonsternation by jfkelley June 15, 2009

Emocoaster 

Emotional Roller Coaster: Meaning a state of feeling "ups and downs" of emotions in a short period of time.

Contraction of Emotional Roller Coaster. Not knowing an outcome of a very unpredictable situation can cause an emocoaster of emotions or feelings.

Emocoaster by TJ2 November 26, 2013