Like "budder" for butter.

My mom (see "sandwich" comment above) always got on my back for making T's into D's. Or eating the T's altogether - for example, I usually lose the T in Italy when I'm not paying attention, so it comes out "I-uh-lee". Now that I don't live with her any more my pronunciation has definitely gone downhill (if you define not enunciating as the downhill direction).