"hd" is a verb that describes when a person is
sexually aroused. Being "hd" originated from the word "
horndog" and was later used as a substitute for the words horny or being
turned on.
Boy: "I want to grab your neck from behind, suck it with little
nibbles of bites to get you moaning my name. I want to spread my wet kisses all over your
tights and make you drag my head such that I am kissing your pussy all over. I want you to moan in ecstasy as
I try the crazy new things I have learned!"
Girl: "Holy shit! You just made me so hd!"