Every day, you can get two free tokens delivered straight to your game, so if you run out of tokens, there is still hope for playing the Dumbest of the Dumb again; don’t think that you have to delete the app or anything. You just have to be patient and wait for the tokens to come.
Another option if you want the free tokens right away is to set the date on your phone or your tablet ahead by exactly one day. You have to shut the game off altogether before you do this or else it won’t work. Once you shut the game off and set the time ahead, you can go to the game and open it right back up, and you will earn free tokens immediately. You can do this trick as often as you want for free tokens.
Go to any one of the stages and tap the stage, then after you complete the train safety bonus round, go to the title screen for the stage (Freezerville, Drown Town, Adrenaland, etc) and you’ll see the list of events. Scroll to the right by swiping, and you will be able to connect on Facebook and challenge your friends. Swipe again, and you can see a worldwide leaderboard, so you know the scores that you have to beat.
To practice all of the safety bonus stages in a row before you go to the Dumbest of the Dumb, tap on each of the three stages (four stages once Adrenaland opens) to ride the train over and go to the safety round. Tap on each of the stages in a row before you play the Dumbest of the Dumb, then go there and you’ll replay one of the three safety bonus rounds – and likely get a much higher score because all three are fresh in your memory.
After you do that you won’t be able to play them (the safety bonus stages) again immediately. You can change that by waiting a few minutes, or by shutting down the app and then reopening it and going to one of the levels to try it again. Do this as many times as you want for endless practice of the bonus levels.
There are hex editors available to mess with the scores in the app, but chances are that if you try to use it to mess with the score you’ll get banned. Mess with the speed of the game instead by searching for the speeds associated with the various games.