"Many witches and wizards, talented though they are in the area of loud bangs and smells and sudden disappearings, are yet unable to penetrate the veiled mysteries of the future."
-- Sibyll Trelawney (PA6)
A common term for the kind of overt, showy magic which may be considered by some to lack subtlety.
References from the canon
- Snape's makes a similar reference in his comment regarding the subtlety of potion-making: "As there is little foolish wand-waving here, many of you will hardly believe this is magic" (PS8).
- Divination is totally different from loud and showy magic (PA6).
- Hermione said the Weasley Twins "only know flashy stuff that's of no real use to anyone" but later had to express her admiration for their fireworks that disrupted all the classes at Hogwarts and drove Umbridge crazy (OP17, OP28).
- According to Mr. Ollivander, acacia wand wood "is not suited to what is commonly known as 'bangs-and-smells' magic." (Pm)