1 definition by Jr the jackass
A "Semen Demon" is a female who seeks for mens semen in order to have kids or just for the fun of it.
M y ex-girlfriend broke into my house, drugged me and when I was passed out she jerked me off and when I nutted she kept my semen in a jar I guess you can say she's a real "semen demon".
by Jr the jackass October 29, 2022