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1. a good friend
2. short for "That's my dog"

short version is "smis"
Ryan: "Dude I hooked up with the chick last night, you're smidog for not cockblocking me."
by Hugh Jassman April 24, 2005
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Apr 22 Word of the Day
When you eat dirt for the first time and leave your family to build a shack in the woods
Bro since I got dirtpilled on Tuesday I have made sooo many worm friends and made them soo many little houses to get married in. Me? Lonely? No you’re the lonely one u lawn owning freak
via giphy
by ecogoth December 30, 2020
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