Yeah, some things are so common and small as to not merit their own name except in a tutorial. It might be fun to try using those to construct really garden-pathy code. Stick the fork `+/%#` (average when used on its own) somewhere in a train, but use the dyadic case, or position it so that parsing splits it up.
I found that it quickly becomes a mess with tens of parens when you try to do this. Parsing rules of J are complex and the same sequence of symbols can be parsed in a couple of different ways depending on the context - it's good to keep expressions very short to avoid this.
