Old girlfriend

My wife and I were sitting at a table at my high school reunion.

I kept staring at a drunken lady swigging her drink as she sat alone at a nearby table.

My wife, noticing, asked me with narrowed eyes, 'Do you know her?'

'Yes,' I sighed, 'She's my old girlfriend. I understand she took to drinking right after we split up those many years ago, and I hear she hasn't been sober since.'

'My God!' said my wife, 'who would think a person could go on celebrating that long?'