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1.
HDM
"hay dios mio"
spanish for OMG
HDM they ran over juanito
by TORTILLAMAN May 23, 2009
 
2.
hdm
German Slang for "Halt Dein Maul"
it´s like "shut the fuck up"
Uwe: Hey! You´re playing like a noob!

Marc: HDM bitch!
by f0!n June 27, 2005
 
3.
HDM
(N) Hot Dutty Mess. A person or a thing that is a shameful wreck and embarrassing to be around or look at.
Person A: " Did you see Shawndreequa's weave?"
Person B " Yee boom, it was an HDM"
by BitchYouDontKnowMe April 15, 2011