Put on your leather leggings;
sit on a chair in front of your computer;
if you are right-handed, tie your right leg against the inside of the right chair leg - if left-handed, do it with the left leg: fold the rope in the middle, place it in the middle of your leg, go with the ends all the way around your leg and the chair leg, then put the ends through the loop in the middle of the rope, then reverse the direction of rotation and gradually go up each time the next rope loop touches the previous one until you just reach your knee with the rope (see: http://www.boundanna.com/html/en_tech_ropeshackle.html) - all these loops do not really need to be tightened;
Then, however, you bring the rope between the chair leg and your leg and make a few loops perpendicular to the other loops (cinching the rope, which now traps your leg in the tube of rope you just made);
you end back with both ends at your ankle where you put one end in the very first loop and tie everything together (images 6 and 7 of the drawing).
If you can put the chair under the table, no one will know that you are tied up; only they should not ask to stand up.
Then play for example 50 games of https://www.primarygames.com/math/wintercountit/ , but you can choose other games on this site like win 10 games of chess before you may free your leg.
Because of the asymmetric bondage: one leg totally free and the other totally bound you get nervous for playing the game in full concentration.
