Sentence Enhancers

I've been practicing a few new phrases at home, and last night, I tried it out in Subway. Somehow, my mom didn't look as proud of me in Subway as she did at home.
When someone drops something, I like to say, "What the F#@k!"
When some one is in my way, I like to say, "Move Uncle Eric! D%^n!
When I trip over something, I scream out, "Dam%it!"
At first, my cousin and sister would laugh. And I would laugh. And my mom would say, "Isaiah! That's not nice!"

So....
At Subway, when the lady was making my brothers sandwhich, I screamed, "God Dam&*t!" Mom looked shocked....
So....
I need to learn when and how to use my sentence enhancers.