In general it can refer to the whole area south of Perth and west of Albany, but usually only means the Cape Naturaliste-Cape Leeuwin region, in particular the towns of Busselton, Dunsborough, and Margaret River.
Person 2: "Nah sorry dude, I'm goin' down south this weekend"
Calling someone "Down South" is saying they live up to most if not all the southern stereotypes:
1.) Poor Dental Hygiene
2.) Does sexual things to/with own family members
3.) Mentally Challenged
4.) Ignorant people who hate homosexuals and people of other races who aren't of the same race.
5.) Use Ther' instead of there.
Guy 2: You Down-South ass nigga get over yoself!
Guy2: You mean like Alabama?
Guy1: Naw yo, Palm Beach County, Florida. 56Ace get right.
2. Word used to describe a person with southern heritage
3. Word used to describe an object from the south, also music, cloths, ect.
2. That new girl is really down south, she talks real country, i think shes from da ATL!
3. What kinda music u listen to? Mostly down south music, like Lil jon, TI and 36.