Figures it out

Paula knew Cassandra was a compulsive liar, but something was odd today about her. She looked at Cassandra's burgundy t-shirt. "What color is that shirt?"

"It's like a burgundy color," said Cassandra.

"No, it's lime green," said Paula.

Cassandra looked down. "The fuck? It is. Man, I'm so screwy today!"

"Wearing an orange shirt will do that."

Cassandra looked down. "Orange. Didn't I just think this was green. Didn't you just say that?"

"No, I said twice it's orange."

"God, what is wrong with me today?" said Cassandra. "I... am... wearing... an... orange... shirt! Duh!" She said as if trying to slam the notion home.

Paula looked at Cassandra. Cassandra had agreed to everything she said. She decided for a bigger test, say something totally ludicrous. "Paula, remember last month when you got drunk and performed oral sex on a police horse."

Cassandra's eyes went wide. "Please tell me you didn't tell anyone about that! I had totally forgotten about that. Please tell me it's still our secret!"

"Of course I didn't tell anyone. You're so lucky you were not arrested, but I think the cop was just stunned you were giving his horse a blow job."

Cassandra blushed. "Oh my god! That was like the worst thing I ever did! I'm still so ashamed and humiliated when I think about it!"

Paula smiled. She now knew Cassandra would believe anything and everything she said.