Pack and a Half 

A Pack and a Half is a TINY male erectile organ of copulation.

Basically, the reproductive organ attached to a man's body which is extremely small (comparable to the tiny cock on a young child boy).

This itsy-bitsy member is typically under 3.54331 inches (or 9cm) in erect size and is generally useless to the broader female population.

A penis so miniature that during coitus it cannot be felt inside the vagina and therefore serves no real function.

The term "pack and a half" has been coined as a reference point. By placing one Sugar Twin sweetener package on the table and then placing another sweetener package directly on top of the first one at the half-way point, one can accurately measure the pint-sized protuberance.

(Group of girlfriends enjoying a glass of wine)

LADY #1- "Sooooo.... tell us about last night?"
LADY #2- "Yeah, C'mon give us the deets!!!"
LADY #3- (Gently and sadly places one sweeten pack at the half-way point over another Splenda pack) and sighs "He was packing all right....pack and a half styles...."
LADY #1 & #2- (Burst out laughing) "Ohhhhh Noooooooo" "That's so sad!"

Disclaimer: Not to be confused with what men typically think is packing because it most certainly is not! Women have secretly been laughing for decades behind the backs of men with dicks of no significance.

Pack and a Half by Irish_Gal_78 January 10, 2013

five and a half pack 

when someone has abs that are slightly slanted or uneven, appearing as if half an ab is missing

never make fun of someone for having a five and a half pack.

1. they will endlessly venture for their missing and elusive half-ab, ultimately leading to their demise

2. They still have five and a half more abs than you

five and a half pack by cheetaela October 23, 2013