Later, he is seen once again peeing, penis in full view, this time in a toilet.

Later, he takes off his bottom to sit on a toilet, showing his butt and a quick flash of his penis.

Later still, he is naked being towelled dry by a man, his butt once again in view with a few glimpses of his penis.

During the extended scene where he is running around and dancing completely nude, when he pees it is a full closeup of his penis.

The young boy in this movie is seen nude (front and back) running, dancing several times. Also shone briefly urinating when he gets scared.