Secret Lesbian Signal?

V sign Usage:

back of the hand facing the signer

• Two - nonverbal communication of quantity
• Victory – was first popularised by Winston Churchill, and sometimes is made using both hands, or upraised arms as Richard Nixon used to do.
• Peace or Friend – used by peace groups, counter-culture, from Chicago to Tiananmen Square.
• Bunny ears – used facetiously behind the head of a subject of a photograph.

Palm facing the signer

• Two - indicating quantity, although more common with palm turned around.
• Insulting – largely restricted to the UK, Ireland, South Africa, Australia, and New Zealand.
• Peace – in the United States without respect to the direction.

Other

• Cunnilingus – insulting, holding the fingers in front of one's lips, as if performing the action.