Used almost exclusively by hillbillies or rednecks. It was derived from mispronouncing "pretty near". Redneckian meaning "almost" or "soon".
Q: "Hey, you done with that road kill stew, Bob?"
A: "Perdnt ner!"
The ability to spot a transgender person based on that person's appearance. Similar to gaydar.
"Yo, I got some serious spaydar going off on that dude. You don't think.... (pause) Nahhhhh!"