Vexierfrage
conundrum
Gegenfrage
counterquestion
Vexillologe
vexillologist
Eiercreme
custard
Geierfalke
caracara
Vierauge
four-eyes
Bierträger
beer crate
crate of beer
Feiertag
holiday
vierfach
fourfold
quadruple
Ackerfräse
cultivator
Oberfräse
router
Verwerfung
warp
erfragen
ask
hinterfragen
question
scrutinise
scrutinize
überfragen
I don't know
you've got me there
Preisfrage
million-dollar question
Rätselfrage
conundrum
Scherzfrage
conundrum
außer Frage
out of the question
Echofrage
echo question