When your rock climbing and you are really fat, can it snap!

HAHAHA!?!?!

Probably not the rope, because it is rated to take a lot of weight (eg, in rescue there r often 2 or more people on one rope) . However, a larger person could put more stress on the anchor points. l always beef up my anchor whenever l can, but sometimes there is nothing to rappell with but a shrivelled littlle cedar tree, or v-thread in the ice. When anchors r in question, the heaviest person goes first, with the anchor backed up. In theory, everyone else should be safe without the back up as long as they & their gear weigh less than the first person.

Not a hope. All the gear is strong enough to hold ten people. So long as it is used properly and the anchors are bomber, you're good to go.

Are you retarded on purpose, or what?

Well... ur scenario is offensive, & l bet ur mommy does not approve of ur being on the 'puter without permission.

Now that that is out of my system, here r some technical peices of info that show how climbing ropes r constructed & tested. The UIAA has very specific tests & requirments.
Climbing ropes r ''dynamic'' or have stretch built into them, this is like a built in shock to help lessen the load (point load) on the rope in case of a fall.
l hope it helps!

http://highonropes.com/climbing-rope-glossary.htm

http://caves.org/section/vertical/nh/50/knotrope.html

And here is some info on the lightweigh narrow diameter ropes that started to gain popularity in the late 1990 is (9.8, 9.3, 9.0 mm)
http://climbing.com/print/equipment/slender/