Firstly, just to credit the SBS Exploration of Human Body-Super Junior Special programmes, these are what I learnt:
There are definite ways how to win a guy in arm-wrestling and weight-lifting.
1. Arm Wrestling
The best way is to get urself dizzy to the direction your hand is trying to hit the ground. By doin that, first create an elephant pose or stance, left hand hold nose while right hand resting on left arm. Then spin yourself anti-clockwise 10 times, after that straight away get on with the match and you will 80% or most of the time win him. However, if his strength is superior, this theory will not work.
Another way is do the Round and Round the Bush game. Ask some fellow mates to spin themselves anti-clockwise, then only you concentrate on them while ask your opponent to rest his eyes and keep his head downwards. Then also after about 4-5 rounds, straight away start and your strength would have mysteriously grown to be more powerful.
As for weight-lifting part, one way is to breathe in liquid ammonia, stinging to the nose and eyes, but waking up the senses. THen smack the guy's chin or cheeks many times, legs too, then in the correct stance and shout, it should be possible
If you are asking for something that can make you laugh, breathe in nitrous oxide, it calms the nerves and gives a pleasant feeling or drowsy for the inhaler, which then even if a small cold joke is being said, he would break down and fall on the ground, laughing like a maniac. But problem, it is rather difficult to achieve this in normal everyday lives, we need a laboratory.
I hope some other English shows, Singapore ones to show these experiments and bring its audience to greater heights. As said by the famous themepark or cartoon tycoon Walt Disney, "if you can dream it, you can do it" with that, I am going to eat.