This is where a you ejaculate into your woman's mouth. She keeps it their and then both french kiss, all the while the semen is swirling around each of your mouths'. This is based on on a popular sweet snack - Viennese Whirl, 2 shortbread biscuits surrounding a cream centre.
Guy 1 - Hey, Me and my girl tried something new last night, we kissed while my semen was in her mouth.
Guy 2 - you lucky so and so, thats the famed Viennese Swirl.
When you perform oral sex on a lady who is on her period. You finish and then look in the mirror to find you have blood smeared on your face. You resemble a warrior of ancient times who smeared blood on his face before battle.
Guy 1 - I went down on my girlfriend last night. Afterwards i realised i had blood all over my face.
Guy 2 - Aaaah you been Warpainting.