This position is known as 'cuissade', from the French cuisse,meaning thigh. The woman lies on her back, with the man at her side. She raises the leg nearest to him and rests it on his body, and he enters from under her thigh, with his nearest leg crossing her body. They can hold one another and kiss, and the position is a very intimate one, possibly because of the 'secretive' form of entry. The woman can exert a certain amount of restraint with her thigh, which can make it more exciting.