Do you know of any famous grammatical errors?

One that I always notice is in Pink Floyd’s song “Comfortably Numb”. One of the verses is:

Can you stand up?
I do believe it’s working good.
That’ll keep you going for the show.
Come on, it’s time to go.

‘Good’, an adjective, can not be used to describe the verb ‘working’... Unless it’s used as its own sentence, such as ”I do believe it’s working. Good.” That isn’t how it sounds, though.

Anyway, have you noticed any grammatical errors in famous works?