They met specialists and thoroughly researched stammering and lisping. Officers in smart cavalry regiments would talk affecting a drawling delivery, and lisping. He has a thick accent consisting of lisping, stuttering and occasional squawks. Examples of speech disorders include stuttering, lisping, and voice disorders. Vocalizations are high-pitched, lisping or tinkling, and weak. This protrusion affects speech as well as swallowing and can lead to lisping. As a result, Crick is unable to speak without lisping. Overbites and underbites may also contribute to non lingual lisping. He was a lisping doctor in the movie "Slippery Slope" (2006).