the helicopter is a crazy ass sex position that should only be attempted with supervision of highly trained experts of the sex art. unless you're the expert.
The male is suspended in air my a rope that should be quite comfortable or you may be rope burned in unpleasant areas. the man is then spun to speeds of atleast 60 rpm (a single rotation per second)
the female is then supposed to be laid on a table, stool, etc. the male is than lowered and inserted into the females vagina. the sex position is finished when:
1) The male orgasms
2) The female orgasms
3) The male vomits
CAUTION: if this act of pleasure has any error in the process you may be inaccurate and piledrive a hole right through her belly button.
dudeeeee.... me and stacy did the helicopter last night.....
Buddy: Haha dude me and carmen did that yesterday... amazing....
Guy: no dude.... we screwed up.... she's in that hospital getting her belly button stitched up