When did many adults become such cry babies that throw tantrums in public?

Our 45th made it acceptable. If the former POTUS can be a poor sport and throw a tantrum after losing an election, that pretty much leaves the door open for anyone else.

when the movie adaptation of the nineth book of diary of the wimpy kid was released, that's when, or was it that fruity pinocchio

I think it was the past two elections.