Go Ahead
To 'Go Ahead' is the current favourite Slabwide euphemism for 'to Die'.
Because the final destination of Slab is Home and when a body dies the soul is considered to be going Home, the phrase 'going ahead' quickly entered the vernacular.
As with all euphemisms for death, there are multiple varieties in common usage. However, by far the most popular, is the phrase; "Go ahead, make my day" which usually means "it would make me happy if you were no longer around" or (O.E.) "fuck off, and die".