Paccino - The name you give to someone who's your best friend, but you

The name you give to someone who's your best friend, but you're too lazy to come up with a real name. A nickname for laziness.

'I'm just calling you Paccino because I can't think of anything else.'

'You're my Paccino. Now stop being so dramatic.'

'If I don't call you Paccino, I'll never get my snacks.'