POW! A word which can represent both greeting and sheer happiness of a situation! WOP! the POW in reverse, to end the greeting. (This ritual can be taken further with 2 gestures: A high kick accompanied by Jazz hands and saying POW! On Entry! or a Fist bump)
Rachel: POW! That Vampire is Hot! WOP!
Imogen: POW! He can bite me any day of the week! WOP!
Sandie: POW! WOP!