Vorführeffekt·When you want to show somebody something you can do but it goes wrong because they're watching you. Source
Grobmotoriker·Somebody, who is really bad at doing stuff, that requires patience and concentration or sb. who does things very quickly and thus doing many errors and mistakes. Source
Bettenburg·Literally bed fortress/castle, a derogatory term for a big hotel designed for mass tourism. Source
Mahlzeit!·A greeting or farewell from or adressed to a person heading off to lunch, or in the process of eating lunch. Source
Klickstrecke·Roughly, click trail. Those click-through galleries that e.g. news websites do to annoy people, increase page impressions and thus ad revenue. Source
Nestbeschmutzer·Nest soiler - Someone whose actions result in their own group/institution looking bad / incurring a disadvantage. Source
Qualzucht·Lit. agony breeding. The practice of breeding animals in a way that fosters or tolerates characteristics that cause the animals pain, agony, behavioural disorders etc. Source
Ewiggestriger·Someone who is forever stuck in yesterday and desperately clings to an outdated world view. Source
Sturmfrei·When all the people you live with are gone for a while and you have the whole place to yourself. Source
Übersichtlich·Describes something that presents information in an easily understandable and comprehensive way. Source
Scheissfreundlich·When someone is very friendly towards you and you think they're being friendly to butter you up they're being scheissfreundlich. Source