I think my dad's an alcoholic and I don't know what to do
why do you think your dad is an alcoholic?
I just think he's been acting weird recently. He falls over sometimes and seems to have been slurring his words.
Okay, that sounds like he is an alcoholic. You should probably talk to him and get him some help. It's good that you noticed his behavior. You should send him to rehab or something.
Nah, I'm going to just ignore it. Problem solved.
He is your dad, so even if you ignore him the problem will trickle down to you in some way, shape, or form. It's more important to get him help because he is your dad. You will also be more happy later down the road knowing you saved your dad and he will also come to realize you as a great son.