look up any word, like spook:
 
1.
1) Size of a large penis.

2) Size penis that most porn stars have give or take a few centimeters.
"Dude, I made her gag on eight inches last night!"
by Damon June 17, 2004
 
2.
An imprecise unit of length. When used by a man describing the length of his penis, it means somewhere between six-and-a-half and seven-and-a-half inches.
Rico said he had eight inches, but you'd have to be generous to say six-and-three-quarters.
by atemperman January 24, 2004
 
3.
Pretty damn respectable length.
That dude's johnson must be eight inches long.
by Cory Chapman May 12, 2008
 
4.
An erect penis length that about one out of fifty men has, but about one out of ten claims.
.
Q: What's a Gay Eight?

A: Six inches.

Q: OK, so what's a genuine eight inches?

A: No one I know (sighs).

.
by al-in-chgo May 15, 2010