Unparliamentary language
Parliaments and legislative bodies around the world impose certain rules and standards during debates. Tradition has evolved that there are words or phrases that are deemed inappropriate for use in the legislature whilst it is in session. In a Westminster system, this is called unparliamentary language and there are similar rules in other kinds of legislative system. This includes, but is not limited to the suggestion of dishonesty or the use of profanity. The most prohibited case is any suggestion that another member is dishonourable. So, for example, suggesting that another member is lying is forbidden.