Some stinkin internets smarty pants apparently beat me to the joke except they call them emotiboobs which is really dumb if you ask me. Boobicons are way better. Looky here NSFW!
I have to add these to my list:
( + )( + ) Fake boobs
(@)(@) REALLY big nipple boobs
(-)(-) Flat against the shower door boobs
(o)Y(o) Wonderbra boobs
\o/\o/ Grandma boobs