I am growing an avocado tree in a cup

I am excited to be venturing into this kindergarten-level experiment in gardening and the growth of seeds. Reactions to the seed in a cup:

My Father: You know, Cara - you are not likely to be here when this tree would be planted, so your mother and I are not going to be responsible for the continued health of this plant.

Me: Ok, well if it dies I'll look sad.

Father: That's acceptable.

My Mother: Oooh! I would love to have an avocado tree.

Two reactions, both wonderfully indicative of their characters.

I am now going to attempt to post a picture of said tree.