
Most of them will be dead by WINTER.
Game of Thrones Season 3, Episode 7

Winter is coming.
Game of Thrones Season 1, Episode 3

The cold breath of WINTER
will freeze the seas...
Game of Thrones Season 2, Episode 1

And come the WINTER you will die...
Game of Thrones Season 1, Episode 4

Now, given that WINTER is coming,
one can assume she's signaling...
The Big Bang Theory Season 1, Episode 3