If I asked for a cup of coffee, someone would search for the double meaning.
The secret of it is to read what you've got in front of you. Don't, if you suspect that something has a double meaning, don't pause. Don't put on a leery vocal expression if you know what I mean on radio. Don't sort of do anything other than read it.
The marvelous thing about a joke with a double meaning is that it can only mean one thing.
Everything has a sort of double meaning for me, there's the ordinary everyday meaning of things, and the imaginary meaning about it all, and I wanted to bring these things together, and in this first big Resurrection of mine you have a good example of this sort of thing.