How to get out of an uncomfortable egg culture situation with this one simple trick.
Real talk: Calling people eggs is a violation of the egg prime directive, and is considered invalidating as you are trying to say that a person is not the gender they identify as, that their identity is invalid. Don’t call people eggs, like ever, it’s extremely uncool.
If a person is gender non-conforming like a femboy, it is considered unacceptable to assume they are an egg based on their presentation not aligning with gender stereotypes. If a person is currently questioning or does not identify as trans it is generally not good to call them an egg either.
Really the only time is after a person comes out, and even then it can be iffy due to the connotations associated and the prevalent misuse of the term. Some people might not use the term Egg to describe themselves at all even before coming out in the past.
The safest use of the term is to describe oneself in the past-tense.
i.e. “I remember back then, I was such an egg”