semenstruate 

The excess semen that flows out of the woman's vagina after sexual intercourse between a male and female.

After a night of of passionate sex Allie began to semenstruate as she walked into the kitchen to get a mid-night snack...she quickly grabbed a paper towel and wiped up the semen just as it ran down the inner thigh of her leg.

semenstruate by gonzo words December 27, 2010

Semenstrating 

When something is very frustrating

This Roblox obby is so Semenstrating

Semenstrating by charik November 20, 2017

Semenstruation 

When your having sex with a girl and she starts menstruating and you pull out after leaving a load, and the semen and menstrual fluids start coming out and mixing together making this dirty ass goop.

Also used after calling a guy, usually Korean, Semen. When his name is Simon. It is to take it to a 2nd level of name morphing

Sebastian - yo Semen
Simon - fuck you Sebastard
Sebastian - easy there semenstruation

Simon - i was totally banging this chick when i felt something weird so i pulled out after letting a load in. she semenstruated everywhere.

Semenstruation by Constapator June 17, 2010

seamenstruation 

When sperm drops out over a period of time after unprotected sex

I had seamenstruation for a week after he came inside me

seamenstruation by wernermeyer October 22, 2023