Saying/Calling check

Quick question, idk if you guys know much about scholastic tournaments, but if you call checkmate, and the tournament organizers go over to make sure it's checkmate but then you run out of time by the time they get there, who won? your opponent or you

That should never happen.  When you call checkmate, you should also stop the clock.   Your opponent should be able to verify that it is indeed a checkmate, but if you have to call the TD over, the clock should be stopped.   Any time I ever needed to talk to the TD, regarding a ruling, I always stopped the clock.   

I would but for some reason there is a rule in where, "If you have a question, it's on your time." They consider calling checkmate a question for some reason. Another thing, they force you to call somebody to check if it's checkmate. 

That must a scholastic-only rule or a new rule then.   I don't recall that rule being in effect when I played in OTB tournaments.   That or my opponent just never complained about me pausing the clock.   I never asked their permission though.   I just paused the clock, told my opponent that I was going to the TD and I was never penalized for doing that.   It only happened once or twice though.   

Once in a tournament (years ago) I checked a guy, didn't say 'check', whereupon he slammed a rook down on my back rank, so hard several pieces fell over. I then said 'check', he said "check hell, that is checkmate! I had to show him, he was in check. I felt bad for him, but it was all his fault. He got so excited.

Yes you are!

It's a distraction more than anything else. Especially in time trouble when you are checking every move, it's extremely distracting. I actually TELL (yes, TELL, NOT ASK) my opponents to cease immediately. If they don't stop, I start slamming pieces on my moves to get the point across to them.

It is the responsibility of the player in check to recognize that they are in check. By the time you get to my level, almost 2100, even with a low tone, you are going to get a lot of "No Sh*t Sherlock" type responses by the 2nd or 3rd time you say "check".

If the player in check doesn't get out of check, then it depends on the type of tournament you are in:

Blitz - Player can capture the King

Quick or Standard - Player states that you made an illegal move, reports it to the TD, and the TD adds 2 minutes to the non-offending side's clock.

I might not play against someone who refused to say "check". I don't mean in a blitz game but a real one. Having said that, in a slower one you shouldn't miss being in check but it's a courtesy and I wouldn't have respect for someone who omitted it.