A anal stimulant, performed by a willing female at the exact moment of male ejaculation to invoke a involuntary spasm.
While receiving a blow-job the female pop's a finger into the males anus at the exact moment of ejaculation, causing shivers and an involuntary Boogaloo style dance... hence the statement the Boogaloo Finger.
by Jason Royle April 21, 2008
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