Water vapor
SONIC RAINBOOM.
Everypony who’s been through fourth grade would know this.
Carl is trying to add physics and science to cartoons, something that isn’t worth trying to do
haha
thats the point. see, i like pointing out problems, and then attempting to explain them. 
rules 1 and 2! rules 1 and 2!!!
the thread that started it all
Or was it here…
not quite.
that one didnt become a full on pony.
What constitutes a “full on pony”?
at least 3 pages of mainly pony related discussion.