Come bite my thumb!
In Shakespeare’s time, biting one’s thumb was a derisive gesture, roughly equivalent to flipping the middle finger. It was considered provocative enough to start fights.
Watsky seems to have taken liberties with the gesture’s implementation, inviting Seuss to bite his thumb for him. While this may not have been done on purpose, it is possible that he wrote this line as an allusion to Seuss’s supposed childish nature. If interpreted in this way, the line essentially means “Fuck you, thumb-sucker. Suck on this.”
Quite an audacious opening remark, but this is the Bard, after all.
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