Gemini crossed arms imagery

[Davidsch]

Different poses have been entered in this topic, but the symbolic meanings are often different. 
Since that is not always clear to everyone such forum topics can become chaotic in their coherency.

I can sum up these four different poses with the following symbolic context:

a* exchange of rings = marriage
b* alchemical wedding = mixing or merging of alchemical elements
c* zodiac symbol for Gemini
d* expression of love or erotic context

The specific symbolic context of crossed arms is not known to me and I have no time currently to look into that. 
If anybody has further insight and an example, please post.