A perfect way to go in with zero expectation but it might just lead to something great!
Yes, nothing is going to happen if they say no anyway, just a simple ask, but the potential is unlimited:
  • being able to pay in sats
  • discounts, because you are a special customer now, maybe even his teacher
  • good opportunity for you to learn when teaching
  • maybe nextdoor shops or his families started to be curious too, etc