1) To have figuratively taken it up the ass (the hoop).
2) railway terminology where new (additional) work orders were passed along to a train crew. The orders were printed on paper, tied with string, and held up high on the end of a pole. The string had a loop for the trainman to lean out of the window of a moving train and aim his arm through the loop (hoop) to get the orders.
"I dunno man, I'm hooped."
Yardmaster: "Theres more work for you down the line."
Conductor:"Damn, Why can't we tie up and go home?"
Yardmaster: "I got the orders from above. I'll hoop them up to you."
Trainman to Conductor after grabbing order successfully: "We're hooped"