King_Rial posted...
Since the 80s, man. Since the 80s at least. That's when I first heard it.
Was it used the same. Way it's used these days I haven't encountered till maybe past 10 years. Before that it seemed to be used for something that would actually be a bet like if a certain team would win or lose. Nowadays people use it as a means of trying to clarify they will do what they said or deny someone claiming they won't do something