In break-up terms, the equivalent of piling his ex-lover's belongings in a heap and setting fire to them

[Dylan] returned at Yarrow's urging for an acoustic encore of 'Mr Tambourine Man' and, telling, 'It's All Over Now, Baby Blue'. Unsettled and irate, he then went off and wrote the scornful 'Positively 4th Street' - in break-up terms, the equivalent of piling his ex-lover's belongings in a heap and setting fire to them.

D. Lynskey, 33 Revolutions per minute: a history of protest songs (2010), 86