Great.  She's drunk and Rarity probably pointed out I was lying.  This is going to be a wonderful conversation.  "Oh?  And what makes you think I was lying?  You wanted the truth, so why wouldn't I give it to you?"  The expression on his face was somewhere between exasperated and agitated as he replied.  All around he could see various ponies peeking their heads out of windows and doors, then going back to sleep as they simply wrote the conversation off as the ravings of a drunken mare.