The Brazilian helicopter is when one attaches a strap-on to their backside, and penetrates two people at once with their (penis/extra strap-on on groin) and the strap-on on their backside. They then commence to roll around on the bed as to create a helicopter-like motion with the two phalluses.
âBro last night was crazy!â Tom said, âI met up with Maddie and another girl and we did a Brazilian Helicopter!â