I read Allan Pease's book "Body Language" and he described a
sign of women's arousal/ attraction is her subconsious fondling of
cylindrical object she could get in the presence of the guy(s). The
object could be anything cylindrical like a cocktail glass, a
drinking straw etc.
At first I thought nothing of it. Until I saw my friend doing it
and I was stunned.
Anyway, I witnessed this for myself during a group outing and I was
wondering what that gal was thinking at that time. I don't think
the rest of the other guys noticed it (since they've not read the
book?) but that gal was twisting and turning the bottleneck of the
drink bottle she was holding while engrossed in her
conversation.
So I wonder how true or reliable this "fondling cylindrical object"
theory is and if any of you guys/gals notice this phenomenon,
perhaps with friends or your bf/gf. Luckily she was not looking at
me as she played with her bottle or else I would have to make an
excuse not to sit next to her. 
More information on Allan Pease's theory can be found at
http://www.bodylanguagetraining.com/nathealtharticle.htm
