Any house/apartment/frat house/trailer/etc. which is used for individuals to crash (sleep, chill, hang out, lurk, etc.) for a period of time. In order to "crash", one must not actually live there (e.g. have their name on the lease, own said flophouse, etc.). Flophouses are typically used by college students, drug addicts, transients, vagrants, or other unsavory characters.
A flophouse may also be the home owned by the parents of a college student, who after being away at college, wishes to live as if he/she is still at college (e.g. staying out all night, returning just to crash at mom and dad's house, then leaving again), rather than conforming to the pre-college rules.
Dude: (Talking to someone passed out face first on the floor of his college apartment) Hey man, who the hell are you? What do you think this is, a flophouse??
Bro: Sorry dude, I must have passed out for a minute.
Mom: Where have you BEEN for the last three days? You come home just to sleep?? What do you think this is, a flophouse??!!
A marketing ploy used to trick people, usually in order to make them believe that they need or must have a particular product- to be cool, healthy, happy, etc. Comes from the combination of 'gimmick' and 'image', because a gimmage is usually used when a company wants to change their product's image in order to sell more of it. Gimmages have been used for a long time, but even more so recently.
Products like Sobe's Lifewater and Vitamin Water...the gimmage is making you believe that these products are good for you and will make you more healthy- in fact you need them or you just won't get enough vitamins or have enough "life" in you.
Gatorade- forever marketed as a product to enhance your performance in sports or highly-active situations. Now they have Gatorade Tiger, because it will make you play like Tiger woods, and the whole 'G' renaming, meant to give Gatorade some street cred and make it more popular in the hood- to compete with Kool Aid and Little Hugs.
Anything sold in an infomercial.
Red Bull, other highly-caffeinated drinks, 5 Hour Energy...because one just won't have enough energy for anything without it. Our society is hectic today, but marketers have led us to believe that we NEED caffeine, and lots of it, in order to survive.
McDonald's, with trying to market themselves as healthy...they're still not.
Trash, white trash, ghetto people...often loud, obnoxious, unintelligent, using improper English, and causing some kind of a ruckus or scene. Ideally this term is said with a New York accent, from where it originated.