Female Muscovy ducks have spirally, squiggly vaginas that keep out undesired penises. For desired penises, they simply relax their muscles to allow entry. They have evolved this capacity while male Muscovy ducks have evolved 8-inch penises that get fully-erect in a third of a second.
Friends, duck sex is a high-stakes world.
One Comment
I savor, cquse I found exactly what I was taking a look for.
You’ve ended my 4 day long hunt! God Bless you man. Have a great
day. Bye jonna.manninen@tuttu.fi