Some things can be very puzzling in life.
Like the response of the man in this advert:
We label such a response as bewildering.
Dictionary Definitions for Bewilder:
1. To confuse or befuddle, especially with numerous conflicting situations, objects, or statements.
2. To cause to lose one’s bearings; disorient (verb)
Usage Examples for Bewilder:
1. Women can be quite bewildering creatures, it is extremely hard to know what they mean when they say what they say.
2. The hustle and bustle at railway stations can be quite bewildering: it can leave one totally confused.