When a webpage hijacks another webpage by loading it in an HTML frame with a small "bar" at the top of the page.

Editing a person's digital picture frame to include a picture of oneself, or inserting a lewd, disgusting, or pornographic picture into the shuffle of said frame.

Any attempt at changing a friend's (or enemy's) home screen or profile picture to a different picture--usually something pornographic, lewd, or disgusting.