The phrase "what bends as it straightens has nothing to prove" is a riddle that has been discussed in various forums and websites. Here are some of the interpretations and answers that have been proposed:

• A triangle: According to a Reddit thread, the angles of a triangle will bend to accommodate the side that is straightening out. However, this interpretation has been debated, as it is not clear whether a triangle has "nothing to prove."

• Faith: A user on the Gunnerkrigg Court ProBoards suggested that faith is the answer to the riddle. Faith can bend ones knee and straighten ones life, and when you find your faith you have nothing to prove.

• The line in "The Dot and the Line": The plot of this book involves a line that bends itself into various shapes to win the affection of a dot. After straightening itself out, the line is able to create complex shapes and prove its worth to the dot. However, this interpretation may not fit the exact wording of the riddle.

• Truth: A review of a Gunnerkrigg Court comic suggests that truth is the answer to the riddle, as it doesnt bend as it straightens and has nothing to prove.

Overall, the answer to the riddle is not clear and may depend on the interpretation of the phrase "has nothing to prove."