This is very small portion or "bump" of drugs - originally used in relation to Ketamine use. It originates from a girl called bunny on the party scene in South London in 2006 and is now used widely amongst clubbers thughout the UK.
One party goer says to another "Oh no I don't want a whole line of Ketamine - I just want a bunny bump"
by Absolutely Not December 24, 2008
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