What is Monostain?
1.
A event during sexual intercourse that a man ejaculates after only one pelvic thrust
hence the name
mono: one
stain: ejaculation
dude: was I any good
duedet: no, that was a complete monostain
See
Random Words:
1.
refers to a persons asshole in a sexual way.
My girlfriend was so horny last night, she let me boink her no no hole.
See asshole, anus..