Shutter

[Jessica]

A movable cover or screen for a window, designed to shut
out the light, to obstruct the view, or to be of some strength as a
defense; a blind.

[Donald Trump]

To shutter or [shuttering] means that you dont do anything or you chill. The term was coined by [SCA] students in 2007. You can also add the year you graduated to it: shutter [08].

[Britney]

when you are so [mad] you [start] [putting] words together

[Greta]

Each of a pair of hinged panels fixed inside or outside a window that can be closed for security or privacy or to keep out the light.