Sounds like you made that up on the spot
It was in a textbook. I'll find you the link.
Though I did invent a method of torture:
Step 1. Shove fingers down someones throat
Step 2. Before they are able to vomit, cover their mouth
Step 3. As they choke on their own throwup, stab a hole in their neck
Step 4. Use a vacuum cleaner to suck out all the throw up
Step 5. reinsert the pen you used to make the hole and let them free.
Step 6. repeat until satisfied.