Fricatives are consonants produced by forcing air through a narrow channel made by placing two articulators close together. These may be the lower lip against the upper teeth, in the case of [f]; the back of the tongue against the soft palate, in the case of German [x], the final consonant of Bach; or the side of the tongue against the molars, in the case of Welsh [ɬ], appearing twice in the name Llanelli. This turbulent airflow is called frication. A particular subset of fricatives are the sibilants. When forming a sibilant, one still is forcing air through a narrow channel, but in addition the tongue is curled lengthwise to direct the air over the edge of the teeth. English [s], [z], [ʃ], and [ʒ] are examples of this.

Two other terms are spirant and strident, but their usage is less standardized. The former can be used synonymously with "fricative", or (as in e.g. Uralic linguistics) to refer to non-sibilant fricatives only. The latter can be used synonymously with "sibilant", but some authors include also labiodental and/or uvular fricatives in the class.

Vivian Stanshall (born Victor Anthony Stanshall; 21 March 1943 – 5 March 1995) was an English singer-songwriter, painter, musician, author, poet and wit, best known for his work with the Bonzo Dog Doo-Dah Band, for his surreal exploration of the British upper classes in Sir Henry at Rawlinson End, and for narrating Mike Oldfield's Tubular Bells.

Stanshall was often called a "great British eccentric", but this was a label he hated: it suggested that he was putting on an act. Instead, as he himself always insisted, "...he was merely being himself." However, it is not difficult to understand why he received the label. Neil Innes said of their first meeting: "He was quite plump in those days. He had on Billy Bunter check trousers, a Victorian frock coat, violet pince-nez glasses, and carried a euphonium. He also wore large pink rubber ears."

Stanshall was born on 21 March 1943 at the Radcliffe Maternity Home in Shillingford, and christened Victor Anthony Stanshall. His mother Eileen lived with her young son while her husband, Victor (1909–1990) (a name he had adopted in preference to his own christened name of Vivian), served in the RAF.