What is Fidonk?
1.
The physical act in which a male grips his cock in his hands and smacks the female in her face. Can also slap another male's face. Back in the Roman times, it was very common for a male to show displeasure of a concubine's felatio by fidonking her.
James Spader and Kevin Spacey can often be found fidonking each other in the showers.
See
2.
to smack a chick with your cock while your cumming
im gonna fidonk that bitch