I found a purple rock!
A lazy way to end a fight. You say, 'I found a purple rock!' to avoid explaining why you’re mad, or why you’re still mad, or why you’re mad about something that doesn’t even matter.
'I found a purple rock!' my sister said when I brought up her old crush.
'I found a purple rock!' my brother said when I asked why he didn’t clean his room.
'I found a purple rock!' my boss said when I told him the coffee was cold.