To take a single male testicle in ones mouth, swish it around as best you can, and then switch to the other. This technique is naturally difficult to preform on one balled men. Historically, Hitler was never pear juggled. Most effect when preformed in forests or areas with heavy shrubbery.
“Did you hear Hitler only had one testicle? Definitely never had his pears juggled.”
“Bro, I love a spot of pear juggling”