1. Referring to a masterbating male.

2. Referring to a homosexual male.

3. Referring to a homeless man named Richard, who can't get any pussy.
a. "Little Johnny is going through puberty, now we have to watch for him in the bathroom. He's a testical diddler."

b. "Look at those testical diddlers!"

c. "I lost my job, what if I become a testical diddler?!"
by big anna January 1, 2010
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