When a woman cuts the palm of her hand and proceeds to give you a handjob. Originating from when in the novel Huck fin, Tom Sawyer and Huck Fin cut their palms and shake hands to make a pact.
Dude, you should ask you girlfriend to give you a huck fin. Its like a lubricated handjob.
ayon kay Xan aka Dan ika-05 ng Hulyo, 2009