"I couldn't care less" means that you do not care at all about something, not "I could care less."

"It's a mute point" means that something is not worth discussing, not "a moot point."

"For all intensive purposes" means for all practical purposes, not "for all intents and purposes."

"Brake" is a device used to slow or stop a vehicle, not "break."

"Nip it in the butt" means to stop something before it becomes a problem, not "nip it in the bud."

"Baited breath" means to wait with anticipation, not "bated breath."

"Whet your appetite" means to make you more hungry, not "wet your appetite."

"Pouring down the rain" means that it is raining heavily, not "pouring down rain."

"On tenterhooks" means to be in a state of anxious anticipation, not "on tenderhooks."

"Peak my interest" means to make something interesting or intriguing, not "pique my interest."