There's more to the origin of the word testicles than meets the eye
or tongue: Testify, testimony and the Bible testaments are said to have linguistically originated from the Roman practice of holding one's testicles when giving evidence. In the Bible Abraham demands his servant hold Abraham's testicles when swearing by the Lord. "... put your hand under my thigh, and I will make you swear by the Lord ...." This means "put your hand under my testicles," which is the manner in which oaths were taken at the time. "Testament," "testify," and "testicle" have the same root. (root as in origin, not as in penis)
So next time you are licking a yummy pair, think of the poor guys that lost theirs with false testimonies
In the meantime....enjoy