Good: To see if you can grab the air vent and make your escape before the slow deathtrap engulfs you.
Bad: To see if you can grab the ceiling fan and prove without recourse how drunk you are.
Interesting: Many desks that are designed to hold the weight of a computer can take the weight of a person due to Duration of Weight Tolerance, similar to how your legs are strong enough to lift several times your weight (which is why they can support your normal body weight for long periods of time without being tired).
Making tea