Sat on a Tuffat

I wonder if, aside from jumping spiders, all other spiders know that their legs could be springy if they bend them at the knees. I don't even know if they're called knees! I guess they don't, or they would jump. Maybe they do jump and they just keep it a secret as I've never seen one jump. Maybe when they are about to swing on their fine webby stuff to get to the other side when they're making a web, they push off with a jump. I've never seen that either. I wonder if they also know that they can tap their legs in a rhythm. I've heard spiders are pretty smart ....omg I wonder if they are musical.... I wonder if they do things for fun or is that just a human trait. How much stuff can a person even know about animals/insects anyway, there's only so much you can observe, who has the time to do that!? Apart from people who get paid to observe them of course.

I wish someone would observe me and let me know who the heck I am, save me the trouble.

...and what the heck is a tuffet!?