1. You now consider Fanny to be a perfectly normal first name.
It threw you the first hundred times, but you don’t even bat an eyelid now.
2. You’ve started saying stuff like, “I totally hallucinated when that woman slapped her boyfriend on the tram.”
Franglais, when spoken with bilingual friends, can be a magical, highly flexible experience…but then you try telling someone back home that you “explosed” your toe on the door stop and you realize the definition of bilingualism should be “the ability to speak two languages imperfectly”.