A consang is someone who is consanguinamorous, meaning you're into sibcest, twincest, cousincest, auntcest, brocest, daughtercest, soncest, unclecest, niececest, nephewcest, dadcest, momcest, or any other notion suggesting you're an inbreeder or incestual, instead of an outbreeder like regular people are
Consarnit is a truly wonderful word with the connotation that something negative has just happened. It's essentially the equivalent of saying "Damnit".
A: Could you perchance inform me of the time? I suspect I am late for an appointment at the nearest liquor store.
B: I regret to inform that the time of day has far surpassed the window of time in which visiting said establishment is probable without the aid of a crowbar. In other words, they just closed.
A: Con sarn it!