<human>: Let's start off with some background information. Being a senior in high school I work at a fast food restaurant and every few weeks a deaf gentleman will come in to order food.

Yesterday he graced us with his presence again and one of the managers on duty actually knew some sign language to take his order.

While she was taking his order I was trying to learn a little bit here and there and at the very end she showed me how to say "Thank you".

Now if you aren't aware the way to say "Thank you" is extremely similar to how you say "Fuck". The only difference is where you start your hand at.

Obviously you can tell what happens next.

With a big smile on my face I basically tell this guy "Fuck you". He gives me this face that is a mix of hurt and surprise and my manager starts signing something ferociously that I couldn't make out.

I'm standing there confused when my other manager tells me what I just said. 

That's when I made an even bigger ass out of myself.

I start saying sorry repeatedly in a rather loud voice while waving my hands like an idiot. That's when he starts looking extremely scared and I realize I'm screaming sorry at a guy who can't hear me.

My manager showed me how to say sorry and he kept saying that it was ok and to not worry about it, but I will never sign again.

Provide a brief overview of the text.
<bot>: Told a deaf guy fuck you instead of thank you then proceeded to scream sorry at him and freaked him out more.