Mexican hurricane

When having anal sex with a girl near a staircase, spin her around right before you cum. Ejaculate in her eyes, grab her by her tits and throw her down the stairs.

The act of splattering very runny diarrhea onto your partner(s) (typically by standing over him/her while defecating, but is also possible with skilled direction of explosive/projectile diarrhea) and then ejaculating semen on top of it and swirling it around to make a creamy brown mix. Works particularly well on the back or stomach.