我爸说的话能信才有鬼
“Dad's words can't be trusted.”
THE DIALOGUE REEL
干 我阿嫲说的话是真的
“[Yo Tzu] Fuck. Grandma was right.”
我爸 说的 话 能 信 才有鬼
“Dad's words can't be trusted.”
至少没有回家叫你做看护
“At least he didn't drag you down.”
“There is no way in hell you can trust a single word out of my dad's mouth.”
Invoking '才有鬼' (only then would there be ghosts) is a common colloquial hyperbolic pattern in spoken Mandarin to express absolute disbelief or impossibility.
LEARNING CHUNKS & PARTICLES
impossible to believe; only a fool would believe it
A vivid idiomatic construction '...才有鬼' used to strongly deny the plausibility or truth of a preceding claim.