shop
To "borrow" permanently from a sibling.  Derived from the appearance of a sibling strolling through your closet or CD/DVD collection, looking at all the merchandise, placing selected items into their virtual shopping cart, saying "hey, can I borrow this shirt, your Abbey Road CD, and The Matrix?", and never returning any of the items, causing you to eventually steal back all your stuff next Thanksgiving.
"Hey hon, let's watch The Matrix tonight."

"We can't."

"Why?"

"Because my brother shopped for it about six months ago."