The girls take it in turns to trample on the slaves head the girls constantly change their bras and panties and heels and step on his head, when one girl is stood on him the other girl is changing then the girls that has just changed then tramples his head and the other girl gets changed and this happens throughout the video the slaves head is trampled for over half an hour none stop his head was quite sore after at the end of the clip the girls double head crush him the pressure is immense, look at the gif image to see the girls bras and panties and heels the girls were wearing.