Why did humans evolve big penises but small testicles?

By A Mystery Man Writer

We have the penis of a monogamous primate yet our body sizes suggest our ancestors slept around a lot.

Why DO humans have such large penises?

Why humans have big penises but small testicles

Why Did Humans Evolve Big Penises but Small Testicles? — Gayety

Penis – Berita, Riset, dan Analisis – The Conversation – laman 1

Human evolution – information, recherche et analyse – La Conversation

Why does Gorilla have small penis compared to humans? - Evolution

Why do Classical Greek sculptures have small penises? (translated

Penis evolution across species: divergence and diversity

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Why do mammals have two testicles? When did it start on evolutionary history? - Quora