Bagger, or Sandbagger is someone who plays in a devision that is clearly below their level usually just to take 1st place. Everyone says bump to have the guy bumped into the higher division. There have many many times someone just played a great round and everyone called him a sand bagger... That can just be rude.
It's almost a right of passage in the game. As you start doing well or maybe even winning a few tournament, you are bound to get called a bagger. The idea is to gently (although doesn't seeem so) make the person aware that his skill level may have outgrown thier current division.
Of course if they don't move up on thier own, thier PDGA ratings will catch up with them and they will be forced up.
I agree with Silverback. As a generalization Juniors have more time to practice and less worries with the world (families next meal, housing, etc..). There are instances in other activities that I have seen that Juniors are not allowed to play against the adults because they are simple better, mainly because of practice time. Look at gymnastics, when was the last time you saw a 30 year old female in the Olympics? Figure skating. etc... Scores should be able to prove/disprove "sandbagging". Player ratings are a good way of providing data over a period of time.
I played in a tourney a while back where the person that won am 4 could have beaten more than half the people in am 2. If I remember correctly he would have cashed in am 2 as well. Beat everyone in am 4 by I think it was 12 shots.
I saw a tourney at my home course. I did not register in time where a guy in advanced shot 3 1000 rated rounds and a 995 rated round. he won by like 14 shots or so. He would of T1 in pro. He is a good player. He then the next week at the same course same layout and everything at a smaller tourney shot like 930- 940 rated rounds and finished like 7th.
I played a tourny a month or so ago,in intermediate I took 3rd,1st and 2nd where from out of town 2nd plays advance at home (not gonna cal him a sandbagger for dropping on a course he has never played)1st place plays open at home.Now that is true sandbagging IMO.