Sentence:  Your bass teacher loathed you for loathing the instrument. Every lesson was the  same: You would <WSD>plunk</WSD> out a few notes, and he would stop you. “Did you practice ?" “Some," you would say. “You have to practice." “I know." Practicing was the  most boring thing you had ever done. Plunk plunk plunk (rest). Plunk plunk plunk  (rest). That was pretty much how the double bass part went in every piece of  music your teacher assigned you. 
Meaning of the word marked with <WSD> tags:  To pluck and quickly release (a musical string).