Gaki Deka (OVA)
Genres: Comedy, Ecchi
Type: OVA, Episodes: 3
Aired: Nov 24, 1989
Source: Unknown
Rating: R+ - Mild Nudity
Synopsis:
A boy/cop who liked playing with his testicles, sentencing people to death, and occasionally transforming into a deer or elephant.

(Source: The Anime Encyclopedia)