Drop-off party

Today at lunch we were discussing my birthday coming up in April (birthdays are always a big topic in our house). So far the girls invite the number of friends equivalent to whatever age they are turning, so Sierra had five friends for her birthday earlier this month.

Sierra: How many friends are you going to invite to your birthday?
Me: Well, I'm turning 36--do you think I should invite 36 friends?
Sierra: Yes!
Jonathan: So, what do you want to do for your party with 36 friends?
Me: Hmmm.... I'll have to think about that one....
Sierra: Do you want a drop-off party?