look up any word, like ratchet:
 
1.
To provide oral pleasure to the southern region of a woman's body.
Brother, he go south on her as much as he can. Like his tongue got that route gps mapped. That man, he got a high level of T.
by John Dohh October 19, 2012
 
2.
An expression that means melting and can be applied to things that melt in normal heat, such as ice cream and chocolate.
Torch: Uh oh the car broke down. I'll go fix it.
Slash: Well, you'd better hurry. The ice cream will go south, and vanilla on your porno mags don't make those models more delicious.
by The Mr Needles Experience September 26, 2006