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1.
US Navy slang for San Diego, CA. No real etymology, some sailors just thought it would sound cool.
"Were you on the Connie when we went around the 'horn?"
"Naw, I came on board when we were already in San Dog."
by Mister Priapus June 01, 2005
 
2.
san diego aka best weather in the country.
yo bro when was the last time we went to sandog
by mike284636324 April 19, 2008