Vampires

There were these two vampires talking. One says to the other, ''I heard on TV that wine is good for the health.'' The other one said, ''Well, let's go to Italy, the Italians drink wine.
So they go to Italy, stand on the bridge and wait. A woman walks by. They vampires kill her, drink her blood and throw the body over the bridge. A few minutes later, a man walks by. They kill him, drink his blood and throw his body over the bridge. Then another man comes along, and they kill him too.
Just as they were about to throw the body over the bridge, they hear a voice singing. The two vampires look down to see an alligator under the bridge singing, ''Drained wops keep falling on my head.''