bell rung
This word is a football term. It refers to when a player undergoes such a huge blow to his head that he can hear a ringing noise in his head.
Coach: Why are you holding your ears you fuc*ing pussy??
Player: I got my bell rung.
Player: I got my bell rung.
rung bell
When you do something that you can't take back or reverse(i.e. as in you can't un-ring that bell).
Jan's decision to have a one night stand is a rung bell.
rung bell
When something makes someone so mad, he has a rung bell and is going to fight no matter what.
Look-out, whatever you said now he has a rung bell.