Did humans have spikes on their penises?

Did humans have spikes on their penises?

Men have lost the DNA code that once made human penises spiny, according to a new analysis of the human genome. Penile spines, which are still present in several modern animals, are usually small barbs of keratinu2014a type of hard tissueu2014that line the outside of the organ.

What do penile spines do?

Penile spines are barb-like structures found in many mammals. Their role remains under debate, and they may play different roles in different species. They may increase stimulation for the male during mating