Close Encounters of the Tile Kind

Aliens more clever than any expected,
able to possess concrete and steel,
waiting patiently until every building is in their control
before they zap occupants and make them mental slaves.

Then they will control credit cards, internet and cable TV,
be the pits when they double interesting rates
and make all personals on net a date with green, slimy mass.

They will be merciful though with vending machines,
snacks candy no longer have calories,
but it all will resemble their favorite food, puke flavored boogers