Any ideas?

Angela • Baby #1 due September 6, 2017.
Do I know how I'm telling my mom that I'm pregnant, we have a baby shower next weekend for my cousin and after it's over I'm going to ask to stop somewhere for whatever reason, then say "so you know in about 8 months m you are going to have to go to another baby shower." But I have absolutely know idea how to tell my dad that he is going to be a grandfather. Any ideas ?