rats toss bag

To display such an insignificant amount of care as to what someone says or thinks about you, that it could literally fit inside a rats scrotum

I couldn’t give a rats toss bag whether he thought I could coach, or anybody thought I could coach. Or could play, I don’t care. (AFL Legend and ex St Kilda coach Malcolm Blight expressing his disdain for former StKilda President Rod Butterss)