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Getting a hardcore blowjob from one's partner, in the vicinity of an automobile. An authentic Ms Hiromi is performed with that partner's guardian driving the car, and both participants in the back seat.
"Dalton, what did you do over the weekend?"

"I hung out with my girlfriend, she gave me a Ms Hiromi while I was talking to her Mom in the car!"

"Nice."
by Banter_Squad_Bangkok February 08, 2016
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Jul 2 Word of the Day
Someone people turn to when they're sad who makes them feel better.
Dude, I was so unhappy about my girl, until I spoke to my serotonin donor who really helped me feel better
by jonfurstn1 November 27, 2009
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