One session of mayonnaise massage will yield thousands of the "things", most being very small. Massaging the mayonnaise into my feet for about 2 hours will extract about 4 tablespoons of the critters.
I've been attempting to photograph the "slugs" as they emerge from the skin. It's extremely difficult to capture this image as the mayonnaise is very shiny, and messy (massaging the mayonnaise, holding the camera, etc.) and while massaging it's difficult to gage when they are beginning to emerge vs. being rubbed out.
The "slugs" have a fine, whitish, filament inside of them. Often it's long (twice the length of the "slug") and curly.
The "slugs" can be felt squirming about beneath the skin and in the muscles. They also cause great burning pain in the muscles.