Answer: idontbelieveyou

AnswerCrossword Clue
IDONTBELIEVEYOU

"Yeah, right!"

IDONTBELIEVEYOU

Doubter's response

IDONTBELIEVEYOU

Wife's comeback

IDONTBELIEVEYOU
"A likely story!"
IDONTBELIEVEYOU
"You're pulling my leg!"
IDONTBELIEVEYOU"That can't be true"
IDONTBELIEVEYOU"You can't be serious!"