You two are wrong. "
Testify" comes from the Latin "witness" and has nothing to do with "testicle" which also comes from the Latin for "witness". I was asked this in class by the professor in college English. I would have been wrong and embarrassed myself, so I just said "I don't know". But here's
what I got from the Internet:
testatio -onis f. calling to witness , or bearing witness.
testificatio -onis f. bearing witness ,
testifying; evidence, proof.
testificor -ari
dep. to bear witness to , give evidence of; to show, bring to light; to call to witness.
testimonium -i n. witness , evidence; proof, indication.
testis (1) -is c. one who gives evidence , a witness; an eye-witness, a spectator.
testor -ari dep. (1) to bear witness to , give evidence of; to make known, publish, declare; as pass. to be attested, declared. (2) to make a will. (3) to call to witness.
BTW they are called "testicles" because they WITNESS to the
procreative power of a man.
Since I was a
witness to the
crime, they want me to testify in
court.