"An SEP," he said, "is something that we can't see, or don't see, or our brain doesn't let us see, because we think that it's somebody else's problem. That's what SEP means. Somebody Else's Problem. The brain just edits it out, it's like a blind spot. If you look at it directly you won't see it unless you know precisely what it is. Your only hope is to catch it by surprise out of the corner of your eye."
Splinter Cell: Adjective Noun!
Splinter Cell: Puppy Helmet!
Splinter Cell: Popcorn Eyeglasses!
Splinter Cell: Peanut-Butter Monkey!
(note: all the words in the subtitles are usually nouns, but the first word in each subtitle is used as an adjective)