autothysis
The act of self-insemination by a female with her fist, by squeezing the semen through her fingers and forcing it out into her vagina. Most commonly practiced when the vagina is too loose and floppy to provide sufficient pleasure to the male.
"The woman's vagina was flapping in the wind as she stuffed a fistful of cum into her gaping vagina, squeezing it out from between her fingers. Thats some hot autothysis, baby!"