Me: So I'm gonna knock out this wall right here to get rid of this stupid little bathroom and make one nice-sized bathroom, and then that tub you're givin me will go about right there where that sink is now.
Greg: Wait a minute, are you sure that's not an original wall?
Me: I'm sure. Welllll....now that you say that...
Greg: I'm not sure, hon. It makes sense that this might've been a little room off the back porch originally, like a 19th-century version of a mudroom.
I get a hammer. WHACK!!
We peer at the hole I've just knocked in the bathroom wall.
Greg: Yep, it's drywall.