Proof by Tiente

My math 1a TA went to the ACM competition as did I. Going over the rules was pretty boring so he brought along the math 1a homeworks to grade. While grading my paper, he asked what Tiente meant. It was on my midterm and homework since #3, always cited when a polynomial was integrated. He said that other TAs were grading parts of the midterm and had asked him about it. So he came up with a justification, saying it meant "this is obvious" in Latin or something. I told him it was a comment he wrote on one of my homework assignments. When we got back from the competition, there was homework 3 where it all started.
Homework #3
At first glance, I thought he was telling me to cite the tiente theorem but it turns out he wrote -1 cite thm. Other math students are encouraged to write tiente on their papers and see if they get credit. Tiente is a word in Spanish so here are some translations:
Inflected form of tentar meaning to grope, tempt, or try
Update 11/16/2003: My TA told the other graders about this site.
Update 11/22/2003: Some other students used Tiente on their math 1 sets.
This is a very tricky theorem, are you sure you want to envoke its power??