Surrounded by his loved ones. Reminding them all of their own mortality and fleeting existence, his children will cry, his grandchildren probably too young to understand the permanence of the situation.
As his life slips through his fingers he feels a fear of the inevitable which is both absurd and terrifying. An existential crisis. The feeling of falling without the ability to jolt awake.
Oh wait, there's nothing funny about death ;P
OT: Napkin Ninjastars XD