Fluttershy: Alright, so... what is this secret method to befriending the animals?
Caretaker: You gotta play "Tag" with 'em!
Fluttershy: What.
Caretaker: Well, more like pretend-play "Hunt" with 'em. See, these are exotic animals rescued from all around the world. They're used to hunters tryin' to poach 'em. But now that they're here, they're a little antsy with nothin' to do. So if you play the old part, try to trap and catch them – as long as you make it clear yer not actually out to hurt 'em – they'll appreciate the chance to run around, and pretty soon they'll cozy on up to you!
(beat)
Fluttershy: That doesn't make any sense.
In a D&D 3.5 campaign, our party got ambushed by a group of (and this is what the GM described them as) Ape Commandos. The repelled down from the trees using these rope and pulley systems and attacked us with long spears. It was a challenging fight.
After we killed them off, the monk and I attempted to recover these rappelling devices they used to get down from the high treetops. The GM said no, we can't because they're too complex. You'd need to be an engineer.
The monk then shows that he has Engineering as one of his knowledge skills. I assist and make the DC to give the monk a bonus, and the Monk rolled a total of 26 for his engineering check on figuring them out. The GM says no, the pulleys don't work like we know pulleys to work.
"Are they magical?"
The GM says no. They just work different.
This is when we both pretty much echo Fluttershy in the last panel. Because we both know how repelling devices work and a non-magical repelling device is not going to work so differently for an ape as it would for a human that we, with a combined check of 26 can't figure out.
"Don't have the enemies use any equipment you're not willing to have the party exploit."
Had a GM once that ran a Vampire game in which a group of Hunters had dart guns specially designed to knock out Kindred. My character thought this was awesome and successfully stole one during his imprisonment. Three storylines later, he busts it out to shoot the big bad the GM was trying to throw at us. I could _see_ the GM go "I could say it doesn't work because... no I already told them it specifically ignores that. I could... no I told them it ignores that too." Eventually just let us get away with it (never did find a replacement dart, though).
...
Vampire is actually EASIER to pull that sort of thing, as a smart/mean DM could make it so that the special weapons are both very rare, and minor holy artifacts that only work for people with faith, or that the materials to make them are super rare.
Dear god I'd WISH the DM came up with half the stuff the party does.
I even gave a list of exploitable weaknesses of my character to the DM and he ignored it and made anime-references instead.
I mean, I'm on board with them, but still .-.