For ingredient substitutions my procedure is the following. First, look for something in your cupboard that you think tastes like the missing ingredient. If that fails, look for something that looks like the missing ingredient. If even that fails, look for something that sounds like the missing ingredient.
My gelignite-based desserts have made many a dinner party go with a bang. (Although they do have the advantage of being strictly vegetarian).
[1.] The lim'rick packs laughs anatomical
In space that is quite economical,
But the good ones I've seen
So seldom are clean,
And the clean ones so seldom are comical.
[2.] Legman, who compiled the largest and most scholarly anthology, held that the true limerick as a folk form is always obscene, and cites similar opinions by Arnold Bennett and George Bernard Shaw, describing the clean limerick as a periodic fad and object of magazine contests, rarely rising above mediocrity.
That said, I don't think an excess of filth, whether or not it's folklorically accurate, is particularly funny either. One, or, perhaps I should say 'the MC community' needs mostly clean stuff to throw the filth into sharper relief. So I think my conclusion is to bring on the odd willy joke, and not to start complaining until we've had several in succession.
Only two more days, i hope.