Funniest thing you ever did on a videogame

[Jiggabyte]

Pretty much anything I ever did on Fallout the Third.
The amount of ways you can execute Allistair Tenpenny alone counts for something... although that may just be me and my morbid imagination.

 

[Th37thTrump3t]

Not really funny but I found it to be a good chuckle when I did it.
Playing Red Faction: Guerilla when I decided to help the RF in a guerilla action. It involved either killing all EDF or destroying a building. So I jumped in a bulldozer/dumper truck hybrid (it had spikes on the front) and decided to attack the building by driving through it.
Whilst saying "Good evening" in a creepy voice.

..You had to be there to see the funny side really.

Speaking of RFG i was playing and i decided to take out a high priority building (as usual these things are HEAVILY guarded but i was prepared-rockets, charges, etc). So i drive there in an EDF transport vehicle i stole from a previous mission and drove into the guard tower. It toppled on top of me and the car was on fire so i got out and watched it explode along with like 20 EDF. Then I proceeded to place charges on the building and blew that up.

Now the EDF are pissed to high hell and are chasing me. I managed to place charges on some of the EDF soldiers and watched them run like a chicken with its head cut off to their fellow soldiers, pushed the button and watched the bodies come down like rain. GOTTA LOVE RAGDOLL PHYSICS!!!

 

[Muffinthraka]

For me the game was super stacker 2, I kept cracking up watching my hugely unstable structures collapse. And I was drunk.