happy meal noun a mixture of chemical stimulants and depressants UK A Happy Meal is more usually a product of McDonalds fast-food restaurants.
Ecstasy dealers have taken to branding their tablets with famous logos: there is Big Mac E, Purple Nike Swirl E, X-Files E, and a mixture of uppers and downers called a “Happy Meal” — Naomi Klein, NoLogo, p. 297, 2001