I think my boyfriend's dad is trying to get at me...
I want to know what you mean about your boyfriend's dad trying to get at you.
I think he's attracted to me, but I don't think he is good enough for me anyway
It's understandable to be uncomfortable when you are the recipient of unwanted sexual advances, especially if those advances are coming from the family member of a significant other. It's good to reject those advances while you are in a relationship and remain faithful to your partner. You should talk to your boyfriend about his father's behavior and how it is making you feel uncomfortable so that your boyfriend can talk to his dad about it.
Haha, you're funny...
I don't think a situation like this is funny. Your relationship can really take a turn for a worse if your partner's parent is trying to come onto you. You need to set boundaries as soon as possible in order to prevent this behavior from continuing.