Grimace Shake 2024 Release Date St Louis. Is the grimace shake back for 2024? Although mcdonald’s has not confirmed the exact date of grimace’s birthday, last year’s product launch would imply that it falls sometime around june 12 —.

Although mcdonald’s has not confirmed the exact date of grimace’s birthday, last year’s product launch would imply that it falls sometime around june 12 —. I, at least, have ordered a grimace shake, so let me tell you how it tastes: