I believe that you are referring to the vuvuzela. It gained much of its popularity(or at least notoriety) at the 2010 FIFA World Cup. The vuvuzela has been a standard figure South African football(soccer) matches, and they came out in force at the World Cup(with much controversy).
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Most of the horns are air horns, not vuvuzela. Most arenas in Canada have actually banned vuvuzelas. You can't even take them to soccer games because they get confiscated.
Hockey ratio is used by how many goals you have scored and how many games you have lost and won.
A zamboni
Yes
it depends on how long you have had it and if they have signed it or not.
FEET
It stands for Time Outs Left, although in hockey, they only get one timeout for the entire game. A lot of scoreboards are used in an arena that hosts both hockey and basketball games, though, and in basketball, they have a few more than in hockey.
it think you will find the long gun of the calvary at the little big horn were carbines, not rifles...
Typically The ref blows a whistle, then drops the puck shortly after.
a puck
there are 30 teams each playing 82 games a season. if each game uses an average of 5 pucks a game it's about 12,300. 5 pucks a game is kinda low tho. so probably quite abit more than that. this is obviously just for the regular season.
Play hockey with it.
Yes, and posssibly in street hockey (balls are more commenly used in street hockey though).