Yo MJ What up Dog? 

Something you say to a dog to calm them down; you may have to replace "MJ" with the dog's actualy name.

Originated from when I was playing with my sis's boyfriend's dog (which is shortened to the initials MJ). Then I said that cause I was bored and she was trying to jump on me.

Me: Mary, stay down!
*dog is jumping at me*
Me: Yo MJ what up dog?
*she stops jumping at me*

Yo MJ What up Dog? by kalley treay July 3, 2007

yo david 

a way to reply to your friends. If you forget someones name, just refer to them as david.

yo david!! whats up

this is the most perfectic thing ever and it was created by the one andy bryne

yo david by Andy Bryne or Brin March 13, 2003

yo yo yo homie yo

Coolest way to greet someone.

"Yo yo yo homie yo.....wazuuuuuuuuuuup!!!"

yo yo yo homie yo by 2q-49fh-jfsd9 July 31, 2005

yo yo

when you are skateboarding and you do a trick and land so hard that it feels like your nuts stretch down like a yo yo and then come back up and hit you.

damn dude i did that ollie off that ledge and got served the yo yo.

yo yo by tangent87 May 27, 2004

yo mama

a word that a person uses to insult another persons mother

micheal had just pissed in the park
jack says,"i know that was what yo mama teach you,".

yo mama by hazwan January 31, 2004

Yo Peg 

One who cooks macaroni for mimes.

"Basketball, Volleyball, then Sopranos Sunday where Yo Peg is making the pasta.
Just leave a message or call my cell."

Yo Peg by Edward Waddlemar March 13, 2003

yo mimby 

A phrase that Gdog4evr likes to say alot.

Yo mimby -gdog4ever (from bcseries.net)

yo mimby by Enjoi December 24, 2004