I'm ussually extremely theoretical and have the be-all-end-all scientific answer for questions like this one. But this one... I don't know.
Some guesses:
1) Its sex, so it arouses you, but it involves no men, so it means no competition... I guess it will depend on the man. I'm assuming higher testosterone men would be turned on by seeing a man and a woman having sex as he does want competiton
2) It shows the women are extremely sexually liberated, and just seeing 2 girls making out is a like an instant "woah, these girls rock i bed" type of feeling. Like personally, I can't imagine a girl like that sucking in bed. Is it even possible?
|