How many times do you feel it's acceptable to say "huh?" or "what?"

I ask a few times. It happens to me a lot. In convenience stores and gas stations the people (hindus or pakis or whatever) ask me about my hair all the time and I hardly understand a word at all, but they point to their own hair so I kinda get what they're asking. sometimes im just not in the darn mood but i usually dont mind a few minutes taken from my day to figure out what they are saying