I mailed this to myself from the future, but I don't understand what it's for yet

we were dead before we landed
so we're gonna leave empty handed
so gimme a big hug as i head out that door
because i might not be coming back

there's no black and white
there's no grey
using gray matter
it doesn't matter

this isn't something you can think out
just put your hands up
and keep them in
go along for the ride
just as long as you don't hide
because you'll be found last
you'll be alone
with no one to point the finger at
but your own

if you wanna rewrite the rules as we go along
that's cool
i'll do the same
got a brand new game

we'll play it together and no one will keep score
so gimme a big hug as i head out that door
because i might not be coming back