性行為的基本類型

2. 異性性交: 異性手交

男對女手交

當男女性伴逐漸探尋彼此的性敏感區時，他們喜歡一次又一次地往復到最為敏感的部位——性器官。因而，十分自然而然地，他們可以感到他們正在從事著手交行為。他們也會發現任何一方都可以採取主動，或還會發現他們能夠非常嫺熟地彼此同時進行手交。當然，對於後者，我們可以說成是相互手交刺激（mutual masturbation）[1]。顯而易見，想要對女方進行手交刺激（masturbate）[1]的男方應該詢問女方喜歡哪里被觸摸和怎樣被觸摸（幾乎沒有兩個女人以完全相同的方式進行自娛。）。十分常見的是，女方會告訴男方陰蒂頭對任何直接的刺激過於敏感，還會告訴男方撫摸陰蒂體兩側和小陰唇遠不如想像的那麼美好。此外，當女方變得性興奮起來時，她的陰道就會自然而然地分泌潤滑液，而男方隨後就應該用手指把這些潤滑液塗抹到陰蒂，以避免帶給陰蒂可能的疼痛。他也應該謹記，隨著不斷增強的性興奮，陰蒂會縮回到陰蒂包皮內，所以逐漸難以觸及到。不過，只要男方遵照女方自己的指引，並且保持刺激陰戶一般區域，男方通常能夠讓女方達到性高潮。當然，因為許多女性能夠迅速接連地有數次性高潮，男方甚至可以繼續愛撫女方的陰部，或轉換到口交或生殖器性交。

As the partners gently explore each other's erogenous zones, they are likely to return again and again to those that are the most sensitive - the sex organs. Thus, very naturally, they may find themselves engaging in manual intercourse. They may also discover that either of them can take the initiative, or that they can very well act simultaneously. In this latter case, one may, of course, speak of mutual masturbation. Obviously, a man who wants to masturbate a woman should ask her where and how she likes to be touched. (Hardly any two women masturbate in quite the same way.) Most often he will be told that the glans of the clitoris is too sensitive for any direct stimulation, and that it is far better to stroke the side of the clitoral shaft and the minor lips (labia minora). Furthermore, as the woman becomes sexually excited, her vagina begins to lubricate naturally, and the man should then use his fingers to spread this lubrication to the clitoris in order to avoid possible irritation. He should also remember that, with mounting excitement, the clitoris withdraws under its hood or foreskin and therefore becomes inaccessible. However, as long as he follows the woman's own instructions and keeps stimulating the general area of the vulva, he can usually bring her to orgasm. Indeed, since many women are capable of several orgasms in quick succession, he may even continue his caresses or switch to oral or genital intercourse.