"Twoofer" is a mockery of 9/11 conspiracy theorists to label themselves "truthers" because they foolishly think they know the truth.
Now, tell me how else a structure of immense weight is supposed to fall when the structural support on a couple of floors weakens enough to cause "pancaking." Ever heard of inertia? It's one of those newtonian things you're throwing around ignorantly. Guess what the mass of a plane can't do? That's right! It can't overcome the inertia required to shift the building sideways far enough to fall anyway but straight down. And that's ignoring the fact that the buildings didn't fall until a bit later after the hit because the fire had to burn long enough to weaken the steel (not melt the steel, as the structural support weakens enough to drop long before the steel melts), which means had there been any kind of sway caused by the planes, it would have been noticeable before the building dropped.
Now, lets deal with the ridiculous demolition claim. This claim can only be made in complete ignorance of how demolitions are performed. You can't just hide a couple of explosives in a building and get a controlled demolition. It takes WEEKS of preparation for a controlled demolition (amongst other things, you don't want all that dust filling up blocks and blocks of the city). First, the structure has to be weakened to the point of near-collapse (otherwise, it might not fall at all). Putting a full load of people in the building in that condition would have caused it to collapse long before any explosives went off. Furthermore, it takes a lot of people and a long time to do that work. Several dozen people at least would have noticed something going on. And that's not even counting the time it would take to plant the explosives in the right spots (and we aren't talking small explosives, people would have seen them sitting there). It is completely impossible to demolish an active building without people noticing the demolition is being performed.
Besides, the buildings obviously weren't controlled demolitions. The buildings pancaked (top levels dropped on lower levels, causing shock force that broke the support on the nearer lower levels, causing a sort of wave to the compression). Demolition drops the entire building at once, which isn't what happened to the WTC buildings at all.
Of course, I can understand how such advanced concepts can escape a mind such as yours that barely grasps 8th grade physics. In the future, try to know what the fuck you're talking about before you open your mouth so you won't show off your ignorance so much.