Rape Accusation Defense

This is a dark and offensive joke that plays on harmful stereotypes. The person accused of rape tries to justify their action by calling the accuser a "whore". This is a common and awful way of dismissing serious allegations. It is a play on the word swear (as in swear an oath) and implying the accuser was a whore, so the accusation is false. It's an attempt to shift the blame to the victim using derogatory terms.