Mates, when you were having meals at Food Court, it’s nothing unusual to see those kiosk or restaurant workers , mostly kitchen, they were still doing the zippers pull when leaving or outside the toilet, how do you expect them to wash their hands, and back to work naturally.
When you received a "thank you' from your customer, it was so powerful that it gave you the motivation to keep going. Imagine the effect on your siblings if you said thank you to them.