"They just shived."

What does this mean, exactly... all the kids in my area use this word. I'm assuming, by who I've seen it used toward in specific situations... to shive means to lie, or act in a crooked way. For example, one who claims he's going to a nine am showing of Toy Story 3 and doesn't show up, is considered a shive, or has shived. A shive can also be a hypocrite. For instance, someone who advocates against dope, yet falls asleep with a blunt in hand, is a shive. If I'm inaccurate with my info, I apologize... please correct me if so. LOL. You see i don't see the sense/mentality in saying such a phrase.... but then again why is it that I use words such as "nonsense", "fool", or "stupid". Therefore, rather than judge those who use language that is different than mine, I like to explore. DONT CRITISCIZE ANALYZE.