Hallucinating Mother Fucker; A term applicable to a person who is under the influence of marijuana and/or alcohol and cannot keep their shit together. Some of the criteria for being an HMF is constantly talking or being really paranoid or annoying. One can be called a hallucinating-mother-fucker or HMF for short.
The term originates from the movie "Leprechaun: Back 2 tha Hood".
Look at this HMF
You were being an HMF last night dude
Chill out you HMF
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