A place where the air smells of sewer and ass. Everyone knows each other and most people never leave because it's like a black hole, once you are sucked in you never ever ever leave unless you're one of the lucky ones who aren't pieces of complete shit that sling drugs around. It used to be a good place to settle down with a family, now it's got more drugs than people in it. If you live here then congrats, you live in a shitty little piece of paradise.
When, in the heat of (normally drunken) passion, a woman's dirty tampon is pulled out and set in a glass. Typically this glass will include some sort of leftover alcohol, resulting in an Ironton Smoothie . This noxious cocktail is normally left on a nightstand or under a bed only to be found later by the home owner/roommate.
Damnit! I just found another Ironton Smoothie in our guestroom. You've got to tell your sister to stop that shit!
A person who has a comically big obsession with Jeremy Irons, the award-winning British actor of such movies as "The Lion King", "Dead Ringers", "The Mission", "Reversal of Fortune" and "Batman v Superman: Dawn of Justice".
A: Have you seen that new Flash movie?
B: I don't think I will see that.
A: Jeremy Irons is in it, for a few minutes.
B: Oh! Why didn't you say it sooner? You know I'm an Ironsophile.
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.
Example #1
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.
Example #2
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 person you hate intensely not because they deserve such hatred but because they serve as a focus for your general hatred. A healthy way to dispense with excess animosity.