to "bend over and take it" means to allow an authority figure; teacher, police, parents.. to repremand you without you fighting back.
Kathy knew her English assignment was due tomorrow, but she decided not to do it claiming that she would rather just "bend over and take it" from her teacher tomorrow.
“Bend over and grab your ankles“ A saying that you are screwed or fucked, often in a challenging or difficultsituation.
“Bend over and grab your ankles“
When our car broke down off the road in the middle of nowhere, I told John that we might as well bend over and grab are ankles because it was going to be a long time before help came.