V.I.P.

V.I.P. means "very important person" and is often referred to politicians, rich people or to celebrities (this one mostly used in Europe).

A Ventilated Improved Pit Latrine (VIP latrine) is a type of Pit latrine that uses ventilation and other improvements for better hygiene.

V.I.P. was also a series starring Pamela Anderson as private investigator Valerie Irons. The show ran in syndication for four seasons.

Vasoactive Intestinal Peptide is an enteric hormone which typically relaxes smooth muscle parasympathetically, perhaps by releasing nitric oxide.