1 definition by ForeverInMyHeart
Uncontrollable Smile Syndrome - being unable to stop smiling because of something someone said or did,
man: i love you so much and the list of reasons has so many on there.
woman: i love you too, but my list doesnt end.
man: everytime you say something like that i cant help but getting USS
woman: i love you too, but my list doesnt end.
man: everytime you say something like that i cant help but getting USS
by ForeverInMyHeart January 9, 2010