411 REFERENCE · Wiktionary
Kool-Aid smile
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From the wide smile of the character used to advertise the drink.
Noun
en US idiomatic informal A large, beaming smile.
en 2007 Michele A. Fletcher Charge It to the Game 116 "We in E," they said in unison as big Kool-Aid smiles popped up on everybody's faces.