Ya llegó mi gallo

Ya llegó mi gallo
 

A few weeks ago I joined a boxing studio which I happened to return to this week. When I arrived the boxing coach tells me "ya llego mi gallo." I know the literal translation which means "my rooster has arrived" but i would like to know what the slang interpretation of "ya llego mi gallo" means. Thanks

It is part of Latin American culture to call you something besides your name. So, don't put a lot of weight in what you've been called, even if it's gordo or flaco. Be flattered.

Ya llegó mi gallo.
My man (someone who can be counted on to win/succeed) has just arrived.

Less likely, but valid translations, could be any trait that a rooster brings to mind, like being strong, fierce (ready to fight), or having sexual prowess (think about being called a stud, for example).