Crazy upper body pyramid: Do 1 pull up / 2 push up / 3 sit up..........then 2/6/9 etc....all the way up to 10/20/30, then 9/15/27 all the way back down to 1/2/3.
This totals 100 pull ups / 200 push up / 300 sit up in about 1/2 hr (estimate)
Notes:
1. Didn't realize when I used to try this I could wait 30-60 seconds between sets. I was trying with zero rest which is why I used to crap out at 7. I also hadn't read about the descending part (dumb ass)
2. I got every pull up on the ascent, including the 10. Had to do 2 negatives on the "9" set on the descent, and 2 on the "8" got all the rest.
3. After the set of 21 sit up on the the ascent, I felt it pulling in my leg, so I switched to crunches. Admittedly not nearly as hard, but I wouldn't have been able to do all the sit up anyway.
For good measure, I added a 30 second Atomik Bomb hang with a 45lb plate, and a light shoulder circuit.