A fork of Rural Dictionary
Abreviated slang for 'Definately So': Used mostly by really amazing people i.e. Barack Obama
S: Hey Carrie, don't you just LOVE this shirt on me? C: Def Not! S: No Carrie. DEF SO.
So so def is another way to say most definatly.
1: Are you going to the game? 2: So so def.