Hmm, I guess there really isn't anything down there. Guess I was wrong. Sorry :)
However, this just proves you aren't carrying any drugs... Because you used them all! There is only one, single way to check if you did. Because, if you did, your sperm will look different from the regular sperm you ejaculate from your penis.
What's that?? I suddenly get the feeling that you're looking for a way out. Tie your hands up, asshole! You're not getting away that easily. Make sure your hands are tied up and you can't get out!