Three way sexual intecourse involving two male participants and one
female participant.
Bilman can often be regarded as a social faux pas, in cases where the girl involved is unattractive.
Bilman is the root word for other phrases such as:
Inverse/Reverse Bilman - three way
sexual intercourse involving two girls and one
guy.
Inverse/Reverse Bilman always earns the male participant maximum lad points.