2nd Edition game, and I'm playing a halfling bard, infamous among the party for his ability to cause copious amounts of trouble with whatever meagre resources are at hand. He was about 6th level, I think.
We are camped in the woods, watching a huge gathering of Orcs. The disparate tribes of Orcs were all coming togther, under the influence/guidance of one of the campaigns' Big Bads, for what we assumed to be some seriously bad mojo. We needed to get more information on what was going on.
I ask if there are any orcish children running around the encampment. The DM says yes, a fair number of them. So, Binwyn grubbies himself up with mud, wraps himself in a old rags, melts a candle to serve as a prosthetic snout, and a baby orc is born. He simply walks into camp, wanders around pretty much ignored. Binwyn was using one of the kits from the Bard's Handbook, so he had the ability to interperet any spoken language. When an orc shouts "hey, kid, get out of the way!" he scampers away to see what else he can see, until he's shooed away by anothr adult who's too busy to pay attention to a kid. In this way, he gets around most of the camp.
So, having infiltrated the camp, Binwyn is at ground zero when the Orcish high priest summons some kind of colossal gorilla. I am told that I'll have time to cast one spell before it has a chance to act, but I will almost certainly be noticed and probably fed to the gorilla monster. Smart thing to do would be to send a message to the rest of the party, to go get help. I chose not-so-smart. Binwyn casts a phantasmal force (2e illusion spell), and calls up a similarly giant gorilla, which starts an aggressive dominance display. The orcish shamans see through the illusion easily, but the big, dumb gorilla doesan't care. It charges the interloper and smashes through the High priests' platform. Binwyn's illusion nibly dodges and weaves out of the way, taunting the giant ape, which chases after it, trampling the gathered Orcish hordes in the process. Having lost control of their super-weapon, the horde scatters and runs for their lives.
After the fact, I had fun explaining to the rest of the party what, exactly, just happened.