It is a well-known tactic to ask a question that suggests a certain answer is expected. This is often described as a leading question, which is generally improper and subject to objection. The exception to such a general rule is that leading questions are allowed on cross-examination of a witness, within limits. When a leading question is intentionally asked, with an expectation that opposing counsel will object, the objection can suggest a desire to hide evidence. When done repeatedly, such questions can become argument and grounds for a mistrial. To read about a case where this did happen, click here.