Period-squirts

When a female is on her period and farts, the blood often makes a noise once the gas from the anus hits it, making it sound like a squirt.

Angie: * Period-squirts*

Lucy: "OMG WAS THAT SHIT!?"

Angie: "NO! I'M ON MY PERIOD!"

Lucy: "Oh! It must have been Period-squirts . My bad!