Diller can be used to descibe many things. In replace of cool, good, or penis.

when you're hungover as shit after a spending a night drunk as a skunk

derived from the word: quesadilla

meaning V. to drink alcohol
N. alcohol

A unit of measurement that is undefined.

when everything goes wrong.

“Diller” is a danish slang-word used as a reference to “penis”, or another word for the male organ between the legs. It is mostly used by lower aged kids (7-12 years) as a swearword, allthough most parents in Denmark doesnt refer to it as a forbidden word.