Gnat dick 

1. A small penis or the man who has one.

2.A man who shows cowardice or fear.

1. Girl1: I heard he has a gnat dick.

Girl2: Lololol

2. Guy1: I don't want to fight you.

Guy2: Go home you fucking gnat dick loser!

Gnat dick by Nobli July 2, 2015

gnat's dick 

An extremely small unit to measure things by, subdivided into a `gnat's dick-end´, (about 8 to the gnat's dick), and a `gnat's cock-hair´, (about 12 to the gnat's dick-end) thus giving an imperial scale of 96 divisions. This sort of accuracy is essential if you're trying to get people on the moon, and maybe one day we will!

Hebden Bridge council worker to oppo,who's struggling to put up a lamp post:
'Move bugger a gnat's dick toward canal'
Oppo gives a shove the wrong way.
'Aye lad, another gnat's cock-hair and yer reet.'

gnat's dick by MisterE July 16, 2008

dick gnat 

An annoying girl or groupie who is constanly "buzzing arounnd" band members. Similar to those little gnats that buzz around the genitals of dogs.

Man, that girl is at every single one of our shows. She is such a dick gnat!

dick gnat by JC95 September 28, 2008