Re: Oh my goodness, there's a convention in here.
Oh well yes Fledge, perhaps my Irish jigs danced in celebration of worm death helped jar more loose, try it, you will like it. I think the leg warmers are indeed an important aspect, the more stripes the better.
Here's is what I did yesterday which may have helped the critters exit so nicely...
7:00 am I took my Humaworm, then had to dash to a vineyard pronto and missed breakfast. I picked grapes for 5 hours and helped myself to a few of the Reisling grapes and a few of the Share-raw (I don't know how to spell this, so this is phoneticially spelled) grapes. Then at about 1:30 I had lunch with all the pickers etc. which included about 1 ounce of Pinot wine, and one ounce of "Share-raw".
Then I came home and did nothing much until the big convention in my bowels ended in the dunny bowl.
Maybe you should try this technique yourself and see what happens.