Verbotenes Wissen - was Dein Deutschlehrer Dir nicht verrät

[Markus]

boofen = schlafen (Markusian dialect)
kleejen = arbeiten (Markusian dialect)
sich lang machen = schlafen gehen (literally "to make oneself long", i.e. to stretch oneself out)
sich auf's Ohr hauen = schlafen gehen (literally "to cast oneself on one's ear", i.e. to lie down)
etwas verpeilen = to err, to confuse something
verpeilt sein = to be disoriented, confused

[Markus]

"Carles hat die Ukulele dort gekauft, wo es all die schönen Sachen gibt" = "Carles bought the ukulele where they have all those nice things" and also "Carles bought the ukulele at the ALDI"

"Was passiert, wenn Anna in's Wasser geht? Dann wird Anna nass!" = "What happens when Anna goes into the water? Then Anna gets wet" but also alludes to "Ananas", i.e. pineapple.

[Markus]

Phantom!

[Luth]

The last one, I borrow for the German class! About the others... some will be said for sure!