grampa's whiskers 

when a load is blown on the face and you sprinkle pubic hair all over it

did you pull out the grampa's whiskers on craig's mom's face last night?

grampa's whiskers by tony b vanmeerin November 4, 2004

Grampy's Whiskers 

An old man's course, gray pubic hair. Typically found on the rims of public toilets and urinals as a result of natural hair loss during the aging process.

Frank called custodial services to report an excessive amount of Grampy's Whiskers in the office men's room.

Grampy's Whiskers by Eaton Holgoode November 16, 2015