Something, or an experience that happens, good or bad that words can not explain. You need to be on the same level of bouyaschi-ness to understand.
To a customer, the Sprintstore is bouyaschi. It is bouyaschi because they could make a payment in so many other ways but they would rather go to the store, it's inexplainable.
When a boy is simping so hard, he brings the girl to bunsen, a high lavish burger joint and spends over €50 on her meal. The next day she ghosts him and never responds to his messages
Guys did you hear about Toms date! He brought Romy out for dinner. What a bunsen beour