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1.
1.More of a new yorkers(between homeboys) way to open a story or talk about something that happend,2. To draw attention to by cutting off in-mid conversation.
1.YO SON..you see that bitch try*na dance, that shit was mad funny yo.

2. ''im telling you i was'',,,, YO SON i was there and and you never came, yo Son you be Stright Lieing.
by Bleep apb March 09, 2009
 
2.
When you drop the letters U and R from your, and apply the word son, then decide not to publish the definition, because apparently the word "boxxhenizeel" was so much better.
Josh: I defined yo son on urban dictionary
UD: NO SON YOU DIDNT! HAVE A BOXXHEINIZELL DAY!
by joshua mcmuffin April 14, 2008