if you bought a 66% het clown then you have a normal until proven that it has the clown gene. this can ONLY be proven by mating it with another BP that defenetly has the clown gene.
66% het means that the parents were NOT clowns but were 100% het for clown. this gives your baby a 66% chance that it has 1/2 of the genes needed to make a clown and 33% chance that it is a normal.
Hope this helps