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Human-human interaction, as opposed to human-computer interaction.
My major is in HCI. Not HHI.
HHI by farkles May 3, 2013
Dude, Susie told me she almost had sex with Joe last night, but once she saw his HHI she laughed and told him to get the fuck out.
HHI by Ralph Esflandoh August 4, 2008
The enemies HHIS while retreating back to their country after witnessing a great martial arts performance.
HHIS by Y5 June 19, 2011
Hanging Head In Shame

Slang acronym used to express an ultimate feeling of shame.
OMG, she uploaded a picture of my VBL !!!! HHIS !!!
HHIS by Frenchman44 November 12, 2011
means "hip hop is dead"
used after any example of the downfall of real hip hop
person 1: hey did u hear that new soulja boy hit? it's fiyaah!
person 2: yea HHID
HHID by beastfromdasoutheast August 17, 2009
Unusual combination of hot, young (over 18 but under 25), sexually loose, and irresponsible, female homeowner.

When the unknown party-goer or police show up the statement "who is the HHIC?" might be overhead.
HHIC by FootInMouth June 2, 2012