buena mano

Etymology
From. Due to the supposed good pick or fine hand of the first customer of the day. It is said that the concept originally came from the Sangley Chinese in the Philippines who are believed to be good at running a business.

Noun

 * 1)  first customer of the day
 * 2)  first sale of the day

Usage notes

 * In the Philippines, it is believed that usage of this term invites luck into the business throughout the day, so business owners tend to welcome the first customer with a bigger smile.