Kack Sack - a bag you carry just to show off, even though it’s uncomfort

a bag you carry just to show off, even though it’s uncomfortable, useless, and also probably made of cardboard.

My Kack Sack is so uncomfortable I think I’ve grown a third leg from carrying it all day.

I tried to put my books in my Kack Sack and it broke. I cried.

My Kack Sack is just a bag with a face. I think it’s watching me.