Let the proof be in the pudding means basically 'I'm going to show, you, just sit back and see.' I take it from that lyric he means 'I'm going to stay sober'(sugar), 'just wait and see.'
In other words, his previous attempts at sobriety have been massive failures (hell his picture was in a Criminal Justice textbook I had), but this time is for real, just wait.
Let the proof be in the pudding means basically 'I'm going to show, you, just sit back and see.' I take it from that lyric he means 'I'm going to stay sober'(sugar), 'just wait and see.'
In other words, his previous attempts at sobriety have been massive failures (hell his picture was in a Criminal Justice textbook I had), but this time is for real, just wait.