"Well, just be careful what you drink, because Romilda Vane looked like she meant business."
-- Hermione Granger (HBP15)
Harry takes the box but doesn’t eat any of the chocolates, having been warned by Hermione that girls were trying to trick him into taking them to Slughorn’s Christmas party (HBP15). Ron, however, discovers the box in March and eats several. The results are immediate and hilarious (HBP18).