https://m.youtube.com/watch?v=UfdG9gsAGlI
1:30 - Drill #1: Slap the Table 3:26 - Drill #2: Notice the Thumb 4:30 - Positioning: Thumb Down vs. Thumb Up 5:28 - How to Position for Thumb Down 6:32 - How to Position for Thumb Up 8:41 - Drill #3: Slap the Bass 10:46 - Drill #4: Relax the Thumb 13:17 - Drill #5: Nail the Accuracy 17:06 - Drill #6: Cross the Strings 19:50 - Drill #7: Mute the Notes 22:13 - Kick-Ass Slap Takes Time