Pointing out that something said by another was painfully obvious
Originated in the mid 1970's and used primarily by females known as "valley girls"
often followed by the word "now"
Jodi: ice cream is cold
Jill: doy now!
Guy 2: "wow, look at those knockers"
Guy 1: " what hell is wrong with you, someone might hear and think we're perverts. thats why we have the code word"
afro-karateka: "doy! doy! d-d-d-d-doyyyy!