A less common digestive tract disorder is obstruction of the intestine, which causes vomiting because food and fluids back up into the stomach because of the obstruction. Many other abdominal disorders that cause vomiting also cause significant abdominal pain (see Acute Abdominal Pain).
Calvin (born August 18, 1995), also known as LeafyIsHere, The Professional Positive Viber, Alex, MemeLord, Reptilian Guy, Lizard King, Faze Chickenwing, Dad, or Leafy, is an American internet personality on YouTube known for his satire, commentary, storytelling and Counter Strike: Global Offensive surf gameplay.
As seen in a few of his videos, his real name is Niall. Evidence can be seen with various tweets, an image from his desktop showing his CV in a word document, and during a Drama Alert appearance where Leafy refers to him as Niall.