Thread:GuitarRock/@comment-25067784-20140418121937/@comment-1330470-20140418144629

The question was how to add them on the wiki, not on the chat.

Emoticon shortcuts is not something which is directly and immediately supported by Mediawiki, but you might try making templates such as "Template:=)" and "Template:=(" which would transclude an emoticon image. Then a user would only have to type  or   to return the image.

For more information on templates, see Help:Templates.