Top definition
The act of taking ones penis and swinging it around in a helicopter like motion. Once the penis has reached it's top speed the penis is then smacked onto the face of the sexual partner.
Q: When i got out of the shower last night I walked over to Suzy and gave her a helicopter whop while she was sleeping.

A: Wow that must have hurt.
by mcschatzi October 24, 2008
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