I tried some new tricks at the gym last Friday night.
Some sort of a "upside down leg press"... at first I practiced using the locks with my feet and getting the feel of the depth and angles.
Then I just kept adding weight until it wasn't safe anymore.
The rubber carpet, that usually is used to give a good grip of the ground, slipped away (on the first push) and took me with it. I would have been in trouble with the 135kg on my face if it wasn't for my knight in a gray shirt who had my back and helped me with the last sets.
:) Thaks dude! I owe you a lot.
I did put that wooden box on one side just in case if everything fails I'm still left with room to breathe ;)