A White Rorschach
When you dump your cum between a girl's tits or butt, then press the tits or butt cheeks together like a cum sandwich, then open it up and it looks like a cum blotch from a cum test.
I did a white Rorschach on her tits and it looked like a cum test from a cum test kid.
I squeezed her butt cheeks together like a cum bag, then opened it up and it looked like a cum explosion from a cum machine.
I did a white Rorschach between her tits and it looked like a cum blotch from a cum stained shirt.