short for South Boston aka southie MA, a hood in boston. No one in boston and southie calls it sobo. This is a term coined by realtors to make southie sound trendy like the back by or south end. This term is harshly rejected by long time southie residents who know its a gimmick to lure in rich yuppie bastards.
Yuppie- "I'm moving to Sobo where I will buy a condo for $500,000so I will be closer to my cube downtown"
Southie Guy- "Are ya Fackin retaded its called southie, not sobo you yuppie bastard,move back to vermont"
December 27, 2006