When something is on or when something is so on. When something is going to happen or happen intensely it becomes option to add the zo. It's commonly used when a guy thinks he going to score with a girl. Also used when a guy is about to fight another guy.
Dude it'sfriggin on tonight.
Dude it's friggin onzo tonight.
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.