dead skin, concealed beneath facial hair, that flakes away when you play with it, leaving a trail of snow down the front of your shirt. very similar to the concept of dandruff, but mostly only applicable to men.
When you blast a bead of Elmer all over your girls hair just before you go out. She thinks she rinsed it all out of her hair, but you notice at the dinner table that she left some, and it is drying up, flaking off and landing on her blouse & Lobster Bisque.
I like to drink beer, and bang broads. Life in the fast lane baby.
One day, some stoned happy chappy was thinking of things that rhymed with dandruff, and by some happy coincidence, along came a man inflicted with the 'druff, to which stoned happy chappy cried, 'Mandruff!'
And so it was. Do you see?
Hairdresser: ah jeez, your head is mandruff central, dude. You ever thought about modelling for christmas cards?
Dude: Oh christ no!