"Potter, when I want nonsense shouted at me I shall give you a Babbling Beverage."
-- Professor Snape (OP32)
Causes the target person to talk nonsense.
References from the canon
- In an effort to pass along a warning to Snape, Harry once shouted "He's got Padfoot in the place where it's hidden." Umbridge was listening so Snape pretended not to know that Padfoot was Sirius Black and threatened to give Harry a Babbling Beverage. But as soon as he left the room he contacted the Order at Grimmauld Place (OP32)