Innerer Schweinehund·Your inner pig dog. The part of you that makes you lazy. You have to overcome (überkommen) it to be productive.
auf Lücke lernen·To selectively study only certain topics for an exam in the hope of getting lucky with what's being asked.
Friede, Freude, Eierkuchen·A situation which is excessively joyous on the surface, its problems are deliberately being overlooked.
Das Gesicht zur Faust geballt·Face curled into a fist - Describes someone who is visibly angry/upset.
Räuberleiter·Helping another person climb to an elevated position by offering them your hands as an improvised rung.
Proll·Someone who shows off wealth in a very obnoxious and brand ridden way and doesn't even has to be wealthy.
Vitamin B·Personal connections that may get you a job, make a sale, general nepotistic shenanigans, etc.