1 definition by The Three-Legged Horse

Generally speaking: a derogatory term for someone who's just a plain idiot. However, sometimes your bros on the inner-circle can be fucksacks, and thus, a term of endearment.
Negative use (derogatory): "Look at this fucksack! He just cut me off!"
Positive use (endearing): "Whattup Fucksack! How have you been muthaf-- I haven't seen you in ages!"

Also note: If you want to refer to someone as a fucksack but you want to keep it clean... (i.e.: a work environment) you can substitute for other words that begin with with F and S.

For example: "Here comes Freddy Sanchez", or "Look at this Flying Saucer over here", or "I still can't believe that Full Screen cut me off!". ... you get my drift.
by The Three-Legged Horse June 9, 2015
Get the Fucksack mug.