With coïtus interfermoris the guy thrusts his penis in the small cavity between his lover’s upper thighs. It looks like intercourse, but the penis does not go into the vagina (or anus).
·        You have to use a lubricant; otherwise it’s only painful and no fun. If you don’t have lube and you do it with a girl, you can wait till she is so excited that her inner lips are moist.
·        It’s best with much friction. If you use the missionary position you lover has to keep the legs very close together or even cross them. If you are spooning, the girl can use her hand to pull the penis to her inner lips and clitoris.
·        To do it safe you have to use a condom. Otherwise you run the risk of pregnancy, when sperm ends up on the inner lips or near the vaginal entrance. If you don’t protect yourself you can also get a STD, like genital warts or herpes.
·        Among homosexuals this technique is common practice.