Exploring a cavern system and abandoned mineshaft on SMP. Find and loot a treasure chest. SSSSSSSS-BOOM!
Respawn, teleport to friend, re-enter cavern with friend to find loot. We take a wrong turn, he flies away (Creative Mode), I get attacked by a spider and killed.
Respawn, teleport, find loot, find dungeon. Loot, friend uses Creative Mode Power to dig a short-cut to the surface. I press on, fight a zombie on a ledge, strike the final blow, SSSSSSSSS-BOOM!
Repeat, repeat, use shortcut to find loot, discover a ravine deep underground, discover lakes of lava with tons of gold and lapis lazuli, explore edges, find diamonds, SSSSSSSS-BOOM!
Everything burns up. Switch to creative mode and spam snow golems to bury the agony.
Do I REALLY need to say? 
Minecraft