I'm Asian. Of course it's a racist joke.
Basil...not mint. I always use the wrong term. You eat basil, not mint with pho.
Pronounce pho? Hmm...the English way I've heard is "f" with the sound of "u" in the words 'but', 'cut'. So say those words and try not to aspirate the 't' too hard. Use that sound of 'u' to go after 'f' to say "pho."
P.S. for Foot. I ate pho earlier and found that I fill the spoon with broth, then I put some noodles on it and a piece of meat/chicken. That way, I can eat both broth and food at the same time. The next time you eat pho, sit there and observe how other patrons eat, specifically Asians. If they catch you, just smile. They'll definitely think you're weird.