A little birdie has told me this cheat, so I do not take full credit for this one. 6699 was the first one to find it apparently, says so from my little bridie, so credit goes to them!
Step 1: Go to Games > Puzzle > Bone Collector
Step 2: Reach level 4 in the game
Step 3: Once you have reach that level, hold the left arrow key (or A key) + holding Up key (or space bar key)
Step 4: And of course… Click off the game, like the chat or even your own character.
Do I need ot say it again? Get on your flow boost to achieve the fast effect of gaining flow! (For 1000% flow boost, you gain 1 flow per 50 to 60 seconds confirmed by Secret)