A word used when you see a fit girl and want to announce her presence to all your friends without her knowing what you're talking about!
*hot girl walks by* SMASH! *all men aware of the word look at the fitty*
An organisation made up of awesome individuals, each with a heart of gold to match; they are a ceaselessly bunch of hard-working individuals, who are able to go for hours on end without basic necessities (such as food or sleep) on one given day a year (August 7).
Kid: "Mommy, mommy! That girl just saved the doggy from the burning building!"
Mom: "Wow. She must be from SMASH!"