Texting shorthand for Hand job motion; the act of making a semi-closed fist and motioning it up and down simulating a handjob. Finishing with an open palm in the air meant to insinuate climaxing onto something. The HJM is used to show you give zero fucks, or are dissapproving of something. Usually accompanied by a facial expression of pursed lips and squinted eyes. Can also be used as a celebratory gesture.

Literally everyone, ever. Including the writer of this definition.

noun: an abbreviation for hand job mondays