Budweiser is a large beer company in America that sells cheap beer. One of their beers is called Bud Light, and it has less calories than regular beer, but the same flavor.
In this commercial, an employee and his boss are in the elevator going to the office. The boss asks Mr. Davis what he did on the weekend. Mr. Davis says that he spent most of the weekend hiding Bud Lights at the office for the employees to find.
In America, sometimes companies give their employees small gifts, such as pens or coffee mugs, as a way to thank the employees and give them motivation to work. In this commercial, Mr. Davis thought the employees would feel more motivated to work if they found Bud Lights at the office.