Poltergash(1987)

Eric Monte plays a luckless loser who can't seem to ever find the right girl. He yearns to be like his best buddy Rod Retta, who's a ladykiller of the first rank. But now Eric's got an even bigger problem -- it seems that his house is haunted by some strange spirits. He hears weird noises and investigates, only to be sucked into a giant ghostly vagina that appears in his den. A concerned Rod decides to hire some sort of ghostbuster to bring him back, and thus we start out on the way toward sexual nirvana.