User blog comment:PurplePenguin/The Grunkle Stan Mystery/@comment-66.153.209.48-20130609160339/@comment-66.153.209.48-20130609162620

Stan: wha oh sorry *takes off the crown*

Dipper: what about that room of your's

Stan: I was going to tell you this later but in the future Gravity Falls will get destroyed  I built the room and filled it with wepons and survival stuff to prepare for the day of the nuclear fallout

Mabel: what about the giant baby oh a baby gets mutated in the fallout then destroys everything