Slang word used in the context of hating someone or just to show stupidity; a donkey of sorts.
God, Darshan, you are such a dersh.
av The Studio 1 mars 2010
to smack into a large inanimate object, such as a tree. Like shwapp
I didn't even see the tree when my forehead dershed it.
av superpants 15 mars 2005