Alternative form of 真っ二つ

(idiomatic) as alike as two peas in a pod, very similar (often of family members)

(idiomatic) people as alike as two peas in a pod, very similar (often of family members)

(mathematics) an inverse proportion, a reciprocal ratio

(mathematics) to be in inverse ratio, to be inversely proportional

proportionality

to vary directly, to be directly proportional to

proportional representation

chickens come home to roost, so you should be prepared for your curse to come back to you. Also said to admonish someone against cursing another person casually.