The Steps of Goat Aggression

[ANNAMFM]

What exactly does "tipping" mean in this context? My buck is a bit out of control lately, and he's already stabbed me once with a horn. I use the water bottle, water bucket, and even the slap on the nose and most times works but he still stands and stomps at me. I take him to the ground every time he gets pushy. Normally I just sit on him, because he's a ND and only around 40lbs. Should I really be more aggressive than that?