Once upon a time, back about 4 years ago, my friends started a gurps game (Generic Universal Role Playing System). What ended up being unique to this is the fact that our GM was meeting up with another group and running their game alongside ours. These guys had not only been playing D&D for a good long while (at least 5 years) but were very, very familiar with tropes.
Now the important thing to mention in all this is the fact that our GM is a massive troll. The other thing is that as soon as we found out about this group, the unanimous decision was made to out-trope them.
Our group ended up with a party consisting of: A psychotic beastmaster who stuck all of his points into casting madness, a genderless mage who could cast almost anything at a ridiculously low level, the only sane thief who was on a quest to rob everyone blind, and a paladin who was not only gullible, but a glutton and who was compelled to tell the truth. always.
The other group spent their first game buying a house and then capturing a lych wolf to guard it when they were gone, and by the time our party had showed up, they had a decent stash of power stones in a lockbox with several wind blast spells armed if you failed to pick it. They also had several spells guarding the front door set around the frame and the place-mat.
The first thing the thief says? "I cast invisibility and climb up into the 2nd story window." while the rest of the party managed to talk our way into getting invited inside. After picking up the valuables, our thief not only snagged the lockbox and exit out with us, but disarmed and unlocked the box to snag the powerstones inside. And then proceded to lock it again, and re-arm it with an upgraded wind spell that would not only blast the person in the face if opened, but would blow BACKWARDS as well if they opened it away from them. Newton's 3rd law at its finest.
We sent that sucker back through the mail and just waited for the next session.