A Roloff is a 'little person' or one born with the pathological condition of dwarfism--based on the TLC (The (The Learning Channel) TV series Little People/Big World featuring the Roloff
family, three of whom (
father, mother, one of the twins, Zach; the other three--two boys and a
girl are of 'normal stature'.
Dwarfism is a typically pathological condition in which the physical size of a person, animal, or plant is well below
normal.
I
don't
think a Roloff would be running with the
bulls in Spain soon. But, then again, who knows.