1.
The act of closing ones eyes as tightly as possible while swirling around their "junk" ferociously immitating a helicopter. The trick is finding the surprise afterwards.
Lance Maynard is a lonely man that has to resort to a blind helicopter every night so he doesn't kill himself.
by H.R. Hugginstuff September 16, 2008
 
2.
For a guy, while masturbating, at the point of climax, he closes his eyes and gyrates his dick around in a circle, getting jizz everywhere, but is unable to see where it landed until he is finished and opens his eyes.
Lance had to clean his sheets after pulling a blind helicopter; jizz was everywhere!
by Steven/Mitch August 18, 2008

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