If he were still with us, I imagine his birthday parties would be quite enjoyable. Alcohol would flow, party favours might be bullets, and the cake would be delivered by a gorgeous dame in a blue dress with legs as long as the Mississsippi. Tired partygoers might want to refrain from napping on the couch, however, lest they fall into The Big Sleep and never wake.
If you miss the party, I bet he’d have a scathing insult at the ready. One of my favourite poison pen lines is from Chandler's The High Window:
From 30 feet away she looked like a lot of class. From 10 feet away she looked like something made up to be seen from 30 feet away.Ouch!
(Cartoon of Humphrey Bogart as Detective Philip Marlow by Warner Bros Art, courtesy of Wikimedia Commons)