First, make sure the house is good and quiet.
Then, get the younger sibling to dress up in an obnoxious furry costume you got off the clearance (75% off!) rack. When in full Kitty mode, suggest she go wake her sister.
After the screams have died down, poke your head in and go, “HEY! IT’S CAPSLOCK FRIDAY! YOU’RE MISSING THE FUN!”
And people wonder why teenagers are surly.
BWAH!
Now I’m even more convinced that I want to come and live in your house
CAPSLOCK FRIDAY!!!! WHO KNEW!!!!
Too bad everyone’s already awake around here….
And I want a picture of that Kitty. >:)