Top Definition
A descriptive term for a sex act between two males where one sits on the other, being penetrated anally, whilst the topmost protagonist bounces up and down, swinging his penis in a motion reminiscent of the twirling blades of a helicopter.
A: Man, did you see that crazy video on the web?
B: Yeah, that's a Heikki Helicopter.
A: wtf lol.
by finnka April 08, 2009
8 Words related to Heikki Helicopter

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