Vietnamese bomb

We went to buy lunch on a Thai restaurant, last time was good and the price was fair.
This time we decided to buy a Vietnamese sandwich, we were convinced by the advertisement, the sandwich felt from an airplane growing and growing in size meanwhile it reached the bottom of the screen, and you can read something like:
"It is worst than an atomic bomb, it is the Vietnamese Báhn mi sandwich...."

Unfortunatelly, we were dissapointed, the price increased 23% on a period of two weeks, and the sandwich didn't taste good enough.

Location: Office, Buenos Aires