The passcode for "Midnights" Bar is not the colour card

[Evrahil]

Constantine is my favourite movie(for those who don't know).
I think that i know what is the key to pass the guard man. "Two frogs on a bench". That says Keanu. But after that Chas says the same for the same card and he can't pass.
What does it mean? I think that the passcode is not the picture on the colour card. The passcode is a sentence which the guard man has been thought of. The guard man
has the ability to deliver the thought(the sentence) in the head of Keanu(telepathy) and Keanu have to read that thought and to tell it with his voice. That's why Chas can't pass with
"Two frogs on a bench".    Telepathy is the key.

[LucaM]

Sorry, but I have to disagree with you.
The card the guard man ( actually, the term is 'bouncer' ) holds up for Chas to guess is different. The side facing the bouncer, and which we see also on screen, is a rat in a dress. Trust me, I've seen the movie too many times.
Or don't trust me, but then Chas' line " Who's a rat in a dress now, huh, bitch? " wouldn't make sense.

But yes, telepathy is the key 

[Evrahil]

You're right LucaM. I watched the movie many timses after my first post in this topic.
Bouncer and telepathy are the key