Stands for High,
Drunk, and Horny. It
means when someone is stoned, intoxicated, and
thirsty for some vagina and/or dick.
Jake: Hey, last night why did you Snapchat a bunch of pictures of you giving a girl
head?
Ryan: Holy
shit, I was so HDH last night! We had so much vodka and marijuana. It wasn't even funny, I gave pretty much every girl at Jerome's party last night
head!
Jake: Next time, hide your phone at a party with alcohol and marijuana so the whole Snapchat doesn't see it.
Ryan: O fuck.. You mean the public seen my Snaps from last night????
Jake:
Yes.
Ryan: I hope none of my family is on Snapchat.