when you put your arms out and twist up right before u spin off the lip of a jump. considered very unsteezy
you: dude check out that kids huck fin
friend: ya hes been huckin himself all day
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.