Had to chime in.
Several years ago, my brother in law got me catfish bait for Christmas, in what he thought was a joke. The stuff was called "Nabba-Cat", came in a small plastic, butter-tub type thing, and looked/smelled, for all the world like human poo.....
Thing is, once I had the nerve to try it, I caught a never-ending stream of fish! When I went into his store, and asked where he'd found that killer stuff, he thought I was joking. Afterwards, it became a local hit. I haven't seen it in a while, but I'm sure it was some simple kind of dough/stink combination. What a hoot. Aside from bait, it made great practical joke material, if you had a friend with an old, seldom-used pickup that sat out back, and could use some "character"....