purple sunday

Something to say to win an argument with a liberal. The goal here is to present a supposed point that they may believe is relevant to the conversation, however it is just some made up bullshit. Through the use of something like “purple Sunday”, a liberal will likely leave in a cloud of shame to go research purple Sunday just to find this definition.

“Oh well you probably haven't heard of purple Sunday”
“Whats purple Sunday”
“Come back and we can finish this argument once you know what purple Sunday is. How could you not know what purple Sunday is”