My husband does this, I think it's him showing I'm his...
Actually ,He would be invading your personal space and should remove his hand forthwith.
It would be my initial move...<br />
after I caught her eye,I'd negotiate a discrete brush of her Nips<br />
before consummating the deal having our Carnal knowledge in private :)
It is the time when I need to go to toilet.
he's trying to nick your handbag, innit? :o