xkcd #2942: Fluid Speech
Alt text:
Thank you to linguist Gretchen McCulloch for teaching me about phonetic assimilation, and for teaching me that if you stand around in public reading texts from a linguist and murmuring example phrases to yourself, people will eventually ask if you're okay.
And in my case, it'd be more like /gna/. And yes I do pronounce the "t" in hot potato.
I feel like it's the glottal T. I know for me, personally, my tongue doesn't touch my teeth, but there is still a T sound. I am not British, though I am from Jersey (New).
My tongue definitely touches the teeth/roof of mouth there. I do swallow the vowels though.