Joe Six-pack - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A lower-middle-class male. For example, I don't think opera will appeal to Joe Six-pack; he'd prefer a rock concert. This disparaging term, first recorded in 1977, conjures up the image of a man in undershirt and construction helmet who will down all of a six-pack (six cans or bottles of beer sold in a package) in an evening.