Green’s Dictionary of Slang

aloof, snobbish, supercilious.

1924		Ferber & Kaufman Old Man Minick 237: But Price and me, we noticed your son’s wife was pretty hitey-titey with you.
1932		C. Keene Nancy’s Mysterious Letter 65: ‘Oh, hitey-titey!’ crowed Mrs. Sheets, her courage renewed with her most able opponent sent off the field. ‘Quite the lady boss.’.
2000		Z. Smith White Teeth 325: Your mudder don’ like to tell you since she got all hitey-titey.