Tab-Flipper

The act of Switching tabs while Watching Porn Mainly used to prevent Someone to see your true nature; Changing Tabs to hide what you're watching from a friend, parent, or etc.

Boy: (at Night watching Porn)
Parent: (comes in without knocking) wtf are you doing?
Boy: nothing! (Switches Tab)
Parent: (looks at screen) you are such a fucking Tab-Flipper!