Grandfather's Attachment Issues

My grandfather never threw anything away, bless him. He died in the war holding on to a hand grenade.

Explanation

Experiment

The humor comes from the dark twist at the end. The grandfather's habit of never throwing anything away is taken to an extreme, implying he even held onto a live hand grenade in war, leading to his death. It's an absurd and morbid interpretation of being a hoarder.