you ask me, I ask who
don't ask me
search me
beats me
your guess is as good as mine
no idea
iunno
you tell me
fuck knows
DK
boggler
have the foggiest
perplexing
nonfamiliar
arcane
unwitting
have the first idea
Scooby
mystified
confuzzling
puzzly
befuzzled
gnomesayin
uncertain
whaddayaknow
fuck if I know
baffled
confuzzlement
donchaknow
semiacquaintance
hint
Scooby-Doo
to my knowledge
addled
thrown
entangled
puzzling
mazy
not have the faintest idea
not have the faintest
puzzler
unfamiliarized
maffled
unfamiliar
unfamiliar with
you'll never guess
unacquainted
bifarious
unacquainted with
knowhatimean