Cuming on the pubic hair of a girl that doesn't wax or shave the region.

A bird's nest refers to when you pack a perfect bowl in a pyrex pipe. The dope is the eggs in the nest and the nest itself is the bowl.

reference to female genitalia

The act of pooping on the roof of an unsuspecting person's car late at night, preferably close to the edge of the drivers side door then sticking yellow Marshmallow baby chicks into it, resulting in subjecting the car's owner to the sight before they enter it the next morning.

Beijing National Stadium (Bird's Nest/Olympic Stadium)

When a guy says this it means he came in his pants and his genital regions got sperm on it.His pubic hairs in this area have been covered in sperm and now have dried up creating a nest.

A person whose balding are bald who has hair in the front and hair in the back of their scalp but in the middle is completely bald which makes their hairline looks similar to a bird's nest