This is when a group of male friends see a hot girl and need to acknowledge the fact that she is hot to there friends, in order to do this they say dikoff to there friend and then waits for the confirmation from there friend by also saying dikoff. This code word is extremely useful in situations where there is a hot girl near by but one of the males is with his girlfriend at the time
two males hanging about with one of the males girlfriends there at the time.
MALE ONE "hey did you see the game last nite?"
MALE TWO "yeah it was pretty good"
hot girl walks buy
MALE ONE "dikoff!"
MALE TWO "dikoff!"
MALE ONES GIRLFRIEND "whats dikoff?"
MALE ONE "thats the name of a football player"
MALE ONES GIRLFRIEND "Ohh ok"