kick (someone or something) to the curb

To discard, abandon, or dismiss someone or something that has become redundant, obsolete, useless, or unwanted. I can't believe that after 20 years of hard work the company would just kick me to the curb like that! I think it's about time we kick this old computer to the curb. I heard Jenny kicked her boyfriend to the curb last night. They must have had an awful fight!