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Main Entry: tas·ti·fy

Pronunciation: \ˈtas-tə-ˌfī\
Function: verb

Inflected Form(s): tas·ti·fied; tas·ti·fy·ing

intransitive verb

a : to make a statement based on personal knowledge or belief a food being quite tasty: bear witness to a food's tastiness

b : to serve as evidence or proof that a food is indeed tasty
"I can tastify as to the quality of Betty's cake"
tastify by LaTomate February 11, 2010
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To become Talty; to be bad ass in the most awesome way
we need to taltify then hed be getting all the girls
Taltify by xunia January 9, 2008

testifying 

get yo testifying ass in the trunk nigga
testifying by toastedbread July 7, 2011
To Toastify (from the Dutch word; Tostificeren)

The act of making something that is not toast into toast by putting it into a toaster. This also counts for something that does not contain ham/cheese.
That's a nice bacon sandwich, let's toastify it!!

I'm feeling fungry, let me toastify my lunch.
Toastify by Tos Tie June 13, 2014
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.
testify by Carey1234 March 14, 2009
1. To give one's information "as truthfully as possible." Taken from an old Roman phrase "to swear on one's testicles." Now, think about that, and think about how differently court cases would turn out if that meaning held true to this day...
"Testify" is usually used in reference to a court setting or a confession of some sort.
testify by aka_Pyro July 28, 2007
A greeting or callback created for the Repo Army (fan-base) for 'Repo! The Genetic Opera', a film written and directed by Darren Lynn Bousman. It is similar to the "ribbit" callback for 'The Devil's Carnival'.
Person#1: This is Sarah. She's starting a shadow cast
Persons#2, #3: Testify!
Testify by lolzitsme July 28, 2012