I used a chocolate laxative to decorate my cupcakes
That doesn't sound fun at all for others...
I think my family will have a blast.
Did you know that laxatives can be very harmful in large amounts? You are actually poisoning and drugging them intentionally, which is highly dangerous and possibly illegal. If they get very sick it's all your fault and you should have thought things through.
I was going to only use a tiny bit. What's wrong with a tiny bit?
Even a tiny bit can mess someone up. If a child eats they dehydration and abdominal cramping can be serious.