The scenario:
Trample footjob where you stand on tiptoes only until he cum
The slave is tied to the floor with arms and legs spread. Filmed closed up and all body, you standing only on tiptoes until he cum.
Make splat noise when you crush his balls
Each time he’s almost to explode tease his frenulum with the big toe then when you are in tiptoes crush his balls harsh, hard and soft,sweet.
Make a Victory pose at the end and smile.
Wear a secretary style like outfit (black mini skirt) and red nails.