hootie, i say yall too! so there are two of us that say yall i guess
some others i use are:
"dude, youre a tool"
"thats gay dude" i know! i know! its bad and i should avoid saying it
and i like to use these too
"hey! in the words of alan jackson, its alright to be a redneck!" i usually use this when i get crap for listening to my country music
"hey, dont mess with texas!" i say this b/c i love the longhorns and texas is an awesome state