Penner

Derived from the colloquial verb 'pennen' (to sleep), via 'Penne' (a place to sleep). According to Wiktionary it is first a derogatory term for an unkempt person living on the street (a homeless person), and secondly an insult for someone who behaves badly, often out of carelessness or forgetfulness. In youth slang it stands generally for a lazy or despised person.