Race condition
A race condition or race hazard is the behavior of an electronics, software, or other system where the system's substantive behavior is dependent on the sequence or timing of other uncontrollable events. It becomes a bug when one or more of the possible behaviors is undesirable.
Passing (racial identity)
Racial passing occurs when a person classified as a member of one racial group is accepted as a member of a racial group other than their own. Historically, the term has been used primarily in the United States to describe a person of color or multiracial ancestry who has assimilated into the white majority during times when legal and social conventions of hypodescent classified the person as a minority, subject to racial segregation and discrimination.