How do you say goodbye?

Do you fall to your knees weeping, clinging to the bare shins of the one walking away? Do you beg them to stay, spitting out pleas of bribery and attempts of guilt? Do you fight back tears, make stupid jokes, and kick around a stone on the sidewalk with your hands in your pockets and your heart in your throat? Do you ignore calls and ignore calls and ignore calls hoping the departing will depart without ever having to say goodbye? Do you give a big hug, say "Seeya lata alligator" and walk away with a thankful grin and a backpack full of memories? Do you write them a letter? Do you cry in the shower? Do you feel sorry for yourself and eat chocolate cake in bed to make yourself feel better?

What do you do when you say goodbye? I've tried these all. I've wept and avoided and ate chocolate cake, but I'm still searching for a goodbye-giving strategy that is more "good" than "bye."
How do you do that?