Determine how strongly joy is expressed in the following tweet. Use the scale: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.
Tweet: I understand now...if it's not pleasing to the ear...then it ain't what you want! I'm so so tired!!
0: no joy can be inferred