A guy was going on vacation and he didn't want his girl friend to have sex with any other guy while he was gone so the guy want to a porn shop and said to the clerk, "I need something to keep my girlfriend from having sex with another guy!"
So the clerk gets a box and said, "This is a Voodoo Dick. Here is a example of how it works," and the clerk said, "Voodoo Dick, the door!" and the dick went and fucked the door.
Then the clerk said to get in the box say 'voodoo dick your box.'"
So the guy brings it to his girlfriend and shows her how to use it but didn't tell her how to make it stop.
The next morning before she went to work she said, "Voodoo Dick, my pussy!" and it was the best sex she ever had, but she didn't know how to get it to stop.
So she went to the Doctors with it fucking her and eventually got in to see a gynaecologist.
She said, "I have a Voodoo Dick in my pussy and there's no way I can get it out!"
The Doctor looks at her suspiciously and says, "Voodoo Dick, my ass!"