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2 definitions by Brubble

 
1.
stands for "Sorry If You Don't"
I like oatmeal, sorry if you don't.
I like oatmeal, SIYD.
by Brubble May 04, 2011
 
2.
A friend of a friend of yours. Someone you have yet to meet, but is friends with your friend. Someone you share a mutual friend with. Someone you share a mutual buddy with.
Oh your friends with (insert mutual friends name)? That makes us buddy in-laws!
by brubble June 01, 2011