"Do you need someone to talk to?"
"No I'm fine."

"Are you hungry?"
"No I already ate."

"Are you still cutting?"
"No I've gotten better."

"Why are you crying?"
"I'm not!... I just yawned."

"Hey what's wrong?"
"Nothing... I'm just tired."

"It's okay, things will get better."
"When?"

"Let me see your scars."
"They aren't there anymore" ("They are still bleeding.")

"Why are you wearing long sleeves and long pants?"
"I'm just... cold"

Comment/vote if you've ever said any of these lies... I know I have personally said all of them, more than once.