C.H.U.D. II: Bud the C.H.U.D.

C.H.U.D. II Bud the C.H.U.D. is a 1989 comedy horror film, directed by David K. Irving, written by M. Kane Jeeves and stars Brian Robbins, Tricia Leigh Fisher, Bianca Jagger, and Gerrit Graham in the title role.

It is a loose sequel to C.H.U.D., mostly in name though the ties do carry on into dialogue and plot. As in the first film, C.H.U.D. stands for Cannibalistic Humanoid Underground Dweller, but the alternative acronym Contamination Hazard Urban Disposal is not carried over.Originally intended for a theatrical release, the movie was released on VHS and laserdisc by Vestron Video on September 27, 1989. ........

Source: Wikipedia