Hottie at the Club A: oh my god, who's that hot guy sippin that bacardi?
Hottie at the Club B: who, that badass in the corner?
Hottie at the Club A: yea
Hottie at the Club B: oh, yeah he's fucking hot, must be a dibyo
A combination of "whistle" and "Dixon;" meaning to have a whistle dick, and to be a Dixon. A whistle Dixon is one who has had his crank shaft bored out by another dudes tongue, thereby making a whistle sound.