Everything was going great for my gnomish assassin. I dived UD, got to HMV. Got decent mithril sword and adamantium dagger. Did the carpenter quest and got healing. Had very good PV equips. Found the Cute Dog Corpse and ran away from random vault. I had several items dropped few floors closer to exit and decided to pick them up to sell them at HMV...

I click pick up ','
I click a
I click a
I click a
I click a
"Hey if I just press 'a' to bottom I just pick everything right? What a nice to feature. Was this in previous version?"

I keep pressing 'a' until I pick everything up.

---- Very short moment later ----

"The mixture starts to glow."
"You are engulfed in a huge explosion!"
"You are engulfed by the roaring flames!"
"You die..."

Not sure if stupid death or bad game design. Probably little bit of both... even after over 10 years of playing I keep doing things like this.