How dumb do you think I am?

How dumb do you think I am?

rude slang I'm not stupid or oblivious. A rhetorical question. A: "But are you sure you didn't say anything that clued him in about the surprise party?" B: "How dumb do you think I am?" Of course I turned the stove off—how dumb do you think I am?
See also: dumb, how, think
Farlex Dictionary of Idioms.

How dumb do you think I am?

Inf. Your question is insulting. I am not stupid. (Shows agitation. An answer is not expected or desired.) Mary: Are you really going to sell your new car? Sally: Come on! How dumb do you think I am? Tom: Do you think you could sneak into that theater without paying? Bob: Good grief! How dumb do you think I am?
See also: dumb, how, think
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • you think
  • poop
  • Do bears crap in the woods?
  • Do bears poop in the woods?
  • Does a bear crap in the woods?
  • Does a bear poop in the woods?
  • Is water wet?
  • Does Dolly Parton sleep on her back?