When someone is making up a
lame excuse
like in school and the teacher stops you
mid excuse, the lame excuse is known as twistin the bread. The teacher would also add to the end, "you twist the bread, it's gonna fly out the window."
"Hey are you twistin the bread?" Mr.
Curran asked incredulously, "cause if you
twist the bread, it's gonna fly out the
window."