1) When a
heterosexual person says something that is
offensive about LGBT culture, to a LGBT person;
2)When a LGBT person expresses that something they have read/heard/seen that is offensive to their identity and is then told that they should not feel that way by a
straight person, especially when it is the same person that caused the offense.
I was breedersplained by some jerk on twitter WHY gays don't need a pride events or LGBT student
resource centers because there are no
straight pride parades or straight student
resource centers.