This is one of the oldest tricks in the book, and a great way to bring a little hilarity into your morning routine if you have a roommate/house-mate/flat-mate/whatever. The premise is simple, sew shut the sleeve or sleeves (or leg or legs) of your roommate's favorite jacket/shirt/pants when they're not around.
Step 1: Materials
For this prank you will need:
-- An article of clothing for your target
-- A needle
-- Thread of a color similar to that of your target garment