Dern means to be lame, bad, not good, stupidity
Ay bro dat shit you did was real dern
Darn it, commonly and most famously used by the janitor of Planet Express: Scruffy.
Hermes:"We are no longer giving out complimentary pornographic magazines in the lounge."
Scruffy:"Dern it."
A word used to describe male genitalia of any length and gerth.
She can get the Dern all night long.
cocain, blow, snort, butta, candy.
"I bought some derns in the club and it made me shit my pants."