Final answer:
This type of irony is an example of verbal irony where someone says or writes something that is the opposite of what they actually mean.
Step-by-step explanation:
This type of irony is an example of verbal irony. Verbal irony is when someone says or writes something that is the opposite of what they actually mean, often for humorous or dramatic effect. In this case, saying something is as clear as mud is an example of verbal irony because mud is not clear at all. It creates a contrast between the literal meaning and the intended meaning of the statement.