Have you ever seen a penis? Apparently not. Besides, you need several lessons in female anatomy. What you are thinking of is her labia. Her clit wouldn't be visible behind her full bush.
I beg to differ with the tags below the title. She's Lotta Topp. Not Kayla Kleevage. Look up both in Boobpedia. Their figures are similar, but their faces are different. Furthermore (I've said this in other videos about her), she's a hermaphrodite. Between 2:08-2:20 you can see her itty-bitty cock sticking through her bush, with her playing with it.