Thanks for your suggestions, Lynda & Pegasus!
I've had PSP8 for some time, but I use v5 'cause it's simpler, stabler, and apparently has better memory management. My searching the web for deformation plugins and trying them out resulted in: Vicman's "Cartoonist" seems to be the best, but it's $20 to register it and get the all-over "unregistered version" watermark off everything you save. Trouble is that the registration "key" they sent me--a registry-key file that
should just go in the registry and disable the watermark--didn't work, and I did all the appropriate things and then asked them for help.... and, getting a "We'll get back to you" response (they didn't; it's been 2 weeks), I'm trying to get a refund.
Essentially, "Cartoonist" has a nicer, bigger interface (it's a standalone) than Richard Rosenman's freeware Pinocchio plugin, but it does the same thing--both have round selection areas. Rosenman's actually may be more versatile, since it will enlarge the part of the image in selection area while Cartoonist just pulls the area; and Rosenman's selection area can be made very, very small.
Interestingly, using PSP5's "smudge" tool very carefully will achieve the same distorted effects, and its selection areas can be shaped any way you want, and the degree of "pulling" is adjustable, too.
My problem (?) is that I just like using plugins. So I'm still searching...