When ejaculation, you make sure that the majority goes into her mouth - but u leave a little trail of semen on her top lip resembling the Hitler moustache.
Remove penis from anus during anal intercourse. Make sure that the penis has a bit of feces on the tip. You may need to go back in deeper to get a sufficient amount of fecal matter on the tip of the penis. Once you have a good amount of fecal matter, you then touch the upper lip of your partner, making sure not to smear, to get a perfect Hitler style mustache.
You can then enjoy the sight, or you can touch lip to lip to provide yourself with a Sexy Hitler too. That is called a Dueling Hitler.
That Sexy Hitler looked great! I wanted to look awesome, so I gave her a lite kiss to transfer one to me too. Our Dueling Hitlers were the talk of the club.