When a musician who plays a stringed instrument accidentally skips a few parts/loses track of progress in a musical piece/score due to the obsession to that other part that they skipped to in a musical piece.
I was playing Tchaikovsky's 4 Seasons on my violin; I loved that fast allegretto so much because it sounded so difficult yet so elegant and pleasant at the same time. Whilst playing that fast allegretto part, I realized I was rushing and that I skipped a few measures ahead of my other fellow musicians, and so the mistake embarrassed me and caused me to return back to the pace of the other musicians, which was no easy task, and since they were playing so quickly, I had to follow the cue with much difficulty. This is the worst String Slip of my life!!