Pitch (one) a curve (ball) American phrase
To surprise or confuse someone by doing something unexpected
Even when they pitch me a curveball, I still have plan B.
He proposed to me in public. That really pitched me a curveball.
No matter how well-prepared you are, there is always a slight chance that life would pitch you a curveball.
To punish someone or something harshly
Once something has been done, you can do nothing but face the consequences.
White lie
The verb "pitch" should be conjugated according to its tense.
A humorous way of saying that what one has said is just what they acknowledge and may not be entirely accurate
Mike: Have you returned from your vacation on the beach? Your skin seems to get tanned.
Jenny: My skin is always dark. That's my story and I'm sticking to it!