These are any pair of pants that
will cause potential mates to not want to have sex with the wearer. A typical example would be a
tight pair of jeans that have some sort of
weird design on them and are worn by a straight male. However, there is not just one style or brand of pants that are birth control pants, and the exact definition can vary across cultures and time periods.
Katie: “I was attracted to Johnny until I saw him wearing those
weird skinny jeans.”
Jenny: “You mean his birth control
pants?”
Mark: “I wear my birth control pants out to the bars just to be safe.”