哪門子

哪门子
nǎménzi
  1. (coll.) (emphasizing a rhetorical question) what
  2. what kind
  3. why on earth

CEDICT

colloquial

Entry Composition

=1 哪 nǎ
  1. how
  2. which
=1 哪 na (emphatic sentence-final particle, used instead of 啊 a after a word ending in "n")
2 門子 ménzi
  1. door
  2. doorman (old)
  3. hanger-on of an aristocrat
  4. social influence
  5. pull
  6. classifier for relatives, marriages etc