Q: "bounce" (n) in the 18th century?

[Joel S. Berson]

What is "bounce" in the following early-18th century verse?  A type
of drink, like flip, or "a loud or audacious boast; swagger", that
might be uttered by a male shortly after entering a
tavern?  (Unfortunately, the provider writes "Transcriptions of
colonial sources have been modernized.")

The days are short, the weather's cold
By tavern fires tales are told
Some ask for dram when first come in
Others with flip or bounce begin.

Joel

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