As Taras do Mini-Vampiro (1987)

A midget vampire terrorizes a small town, attacking dating couples in their randy moments. The news soon spread and a professional vampire hunter is called upon to settle the case, but he finds the little bloodsucker hurt and unable to attack. The greedy mayor sees the opportunity to take advantage of the situation when a film crew comes to town to make an experimental film about the famous monster.

"As Taras do Mini-Vampiro (aka Little Vampire Taints) is a nice horror comedy (decidedly very light on anything resembling horror but featuring a midget vampire which is always a bit creepy). This one stars Chumbinho (aka Fuk Fuk the Brazilian Midget). I love this guy. He causes a guy to be orally dis-membered by a woman giving him a blowjob and sticks strawas in people to drink their blood. He just looks funny really, and is a treat to see act like an ass. There's also a lovingly raunchy scene of a fat bearded guy masturbating to pictures of horses at horse shows! Hahaha! Gold I tell you! This mini-vampire is a bit odd. He walks around during the day with sunglasses and sleeps hanging upside down in public during the daytime. He spies on people having sex and manages to dine at the Y. There's plenty of straight sex, girls giving blowjobs, etc. This is a good porn film for a Saturday afternoon when you have the pad to yourself and you don't feel like watching Kung Fu Theater for want of something spank worthy AND cheezily entertaining."
http://www.imdb.com/title/tt0456685/