Literally, to preach the gospel to someone. In common use - to be very enthusiastic about something and tell people how good it is (e.g. The Communication team makes sure market influencers know who we are what makes us great. They do this by creating communications programs that drive awareness with key influencers and evangelize our brand in he market).
Readily or easily broken (e.g. The gun fires a 20-millimeter round at an incoming mortar after triangulating its trajectory through radar. Hopefully the bullets hit, otherwise they self-destruct. They are also frangible, which means they degrade into a gazillion tiny pieces, minimizing the risk of harming a civilian).
KULLU WAJA3, exp.
Arabic (كله وجع) - everything hurts. Said sarcastically about hospital patients who complain too much (e.g. - ".. and then I had this little pain in the neck that spread down, and I couldn't move my left arm, and I had an itch under my armpit, and my right leg became numb all of a sudden, and.." - "wallahi, kullu waja3! slow down a bit!")
HERD CATS, exp.
To attempt to control the uncontrollable. Implies a task that is extremely difficult or impossible to do, primarily due to chaotic factors. ( For example, in a long thread of emails where nobody knows who is responsible for solving a bug, someone finally grabs the initiative. The topic starter is happy - "Are you herding the cats for this situation?" )
Refers to Chinese imitation and pirated brands and goods, particularly electronics. Literally "mountain village" or "mountain stronghold", the term refers to the mountain stockades of regional warlords or bandits, far away from official control. "Shanzhai" can also be stretched to refer to people who are lookalikes, low-quality or improved goods, as well as things done in parody.
Working or spreading in a hidden and usually injurious way. (e.g. "Thank you, my love. But i did not explain to you the other insidious aspect of writing. There is no way to stop. Writers go on writing long after it becomes financially unnecessary... Because it hurts less to write than it does not to write." - The Cat Who Walks through Walls, Robert Heinlein)