The vaginal canal has a collapsed, folded structure (rugae) that expands when aroused or during childbirth. These folds increase elasticity and surface area.
Black cats are black because of high levels of eumelanin pigment, and the gene that produces it is dominant. A kitten only needs one black gene from a parent to have a black coat.
The “doggy style” position — where one partner bends over, gets on all fours, or leans forward for penetration — is classified as a rear‑entry sex position in human sexuality research
Boob induced orgasms are real…Nipple orgasms are possible because nipples have hundreds of nerve endings that, when stimulated, send signals to the same part of the brain activated by vaginal or clitoral stimulation.
