One time in Fallout 3, I was sneaking around an old building when a mole rat suddenly ran into a wall and got stuck. It was just wiggling there, and I couldn't help but laugh. Then I decided to leave it be as it was more entertaining that way.
A really memorable one was when I entered a building full of mole rats. I had a grenade launcher and when I fired it, the rats went flying everywhere. Some of them even got stuck on the ceiling. It was like a really strange and funny mole rat circus.
One funny story is when my character accidentally set off a bunch of traps in a raider camp. Instead of getting killed, the raiders started running around in panic, some even tripping over their own weapons. It was chaos, but hilarious to watch.
A memorable one was when my character got stuck in a glitch where he was constantly jumping up and down like a crazy kangaroo. I had no idea how to fix it at first, so I just let him do his thing while other NPCs stared in confusion. It was quite the sight.
Sure. One funny Fallout story is about a character who accidentally put on a power armor helmet backwards. He walked around like that for a while, bumping into things and scaring other settlers until he finally realized his mistake. It was hilarious to see everyone's reactions.
Sure. One funny story is when my character accidentally launched a mini nuke right next to a group of super mutants during a battle. The resulting explosion sent them flying in all directions like ragdolls. It was both hilarious and a very effective way to clear the area.
There was a time when I was building my settlement. I accidentally placed a bed right on top of a power generator. When I tried to sleep in it, my character got electrocuted and his hair stood on end. The whole situation was so absurd that it made me laugh out loud. Also, my companions had some really funny remarks about it.
In Fallout 3, I once saw a super mutant trying to fit into a tiny car. It was like he thought it was some sort of new shelter. He was squeezing himself in, and his legs were sticking out. It was just too funny. I watched for a while until he got frustrated and started hitting the car.
The story of Fallout 3 is set in a more desolate and depressing Capital Wasteland. It's mainly about survival and the search for the protagonist's father. Meanwhile, Fallout New Vegas has a story that is more about politics and influence. The Courier has to deal with different groups like the NCR, Caesar's Legion, and Mr. House, and their different ideas of how to run the Mojave Wasteland. This makes the story of Fallout New Vegas more complex and less centered on a single personal quest like in Fallout 3.
In Fallout New Vegas, I once had my character wearing a really outlandish combination of pre - war clothes. When I entered a casino, all the NPCs just stared at me. One even said, 'What in the wasteland are you wearing?' It made for a really funny moment.