Work Text:
You might not think it when looking at Lip Gallagher as he is now, but he used to be a little bit of a prude; especially when it came to swear words.
The word he hated the most was fuck. He thought it was crude, ugly and uncreative. He figured that if you were going to insult someone the least you could do was to be creative about it; yelling 'fuck you!' just didn't cut it.
But then the day came when someone punched Ian and Lip got so angry he didn't know what to do with himself, yelling "go fuck yourself, you asshole!" after chasing the brat away. Afterwards he almost felt like he should wash his mouth with soap.
Later that day, when he was in his bed looking up at the ceiling, he started thinking. He figured that 'go fuck yourself' was a good enough insult, but that didn't change the fact that it was ugly sounding. How to say 'go fuck yourself' without actually saying it...?
The next day was the first time he told Frank to 'G.F.Y.'