@Nk9bjP4A It's a common illusionary display that shows to the reader how delicious the object was for the character that consumed it (Foodgasm), it was made popular recently due to the Shougeki no Souma series. Check out the YouTube link to see a few examples from that series.
This pussy ass loser seriously got intimidated by some twink elf even though he owns the damn place and let his underlings assert dominance in his place because he's such a weakass pussy who only has generic eye powers.