It's a great glitch I must say first great for when you get old pets you don't want and want to level up quickly first you go to the bath section this works best with higher experience items but can use lower I'm sure never tried always used 4 and 5 experience items when you go to fill up the meter for bathtime you stop halfway through and then go down to the arrow that would take you to the next item and press really fast to get duplicate experience of that item over and over until your pet is ready or meter is filled up you can repeat when it TN stops and do it over and again.