you've/it's got me stumped

you've/it's got me stumped

slang I don't know; I have no idea. Well, you've got me stumped. When did Millard Fillmore become president? Can you help me with this math problem? It's got me stumped.
See also: stump
Farlex Dictionary of Idioms.

(You've) got me stumped.

Inf. I can't possibly figure out the answer to your question. Bill: How long is the Amazon River? Jane: You've got me stumped. Bob: Do you know of a book that would interest a retired sea captain? Sally: You've got me stumped.
See also: stump
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • got me stumped
  • assistance
  • come to (one's) assistance
  • come to assistance
  • as (something) as the next man/woman/person
  • as as the next man
  • as good, well, etc. as the next person
  • as the next person
  • down with
  • be down with (something)