Reminds me of a pop-up that happened when the other half was browsing some anime site during a lesson at college, and a XXX pop-up appeared that just kept reappearing whenever you clicked to get rid of it, the tutor chose this moment to start walking down the row of computers towards us which sent the other half into a blind panic because the damn pop-up wouldn't go away, so I leaned over and held the computer power key down for six seconds....problem solved