a word highly overused by science and engineering kids. generally used at both the beginning and end of a sentence.
see also dude
see also dude
by dkljhgfakjfglhkjgl October 7, 2009

by *subject name here* January 9, 2009

1).
person I: "hey!"
person II: "yo. whats up?"
2). yo-yos are fun!!
3).
person: "yooo!"
ganster friend: "whatd you say white girl? i'm gonna kick yo ass"
person I: "hey!"
person II: "yo. whats up?"
2). yo-yos are fun!!
3).
person: "yooo!"
ganster friend: "whatd you say white girl? i'm gonna kick yo ass"
by kate117 January 4, 2008

when someone performs a good trick on a skate board, bmx or blades, everyone shouts Yo, out of respect
by emma louisa September 28, 2007

a word frequently used by people haha..put it in the beginning of a sentence..it works..the end..it works..so use up yo, yo!
by Jezzy Fizzle April 9, 2008

by Spatter Artist April 9, 2006
