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Halley on - as in Halley's comet

simply means to: keep up the good work, carry on, more power to you, party on, keep on keeping on - as in to persevere

keep on keeping on, or carry on, party on
I've been following your extensive work and now a new non-profit you've started.... Halley on, girlfriend! Love you
via giphy
by kesacare July 01, 2018
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