The line comes from Disney's The Lion King, where Timon introduces Simba to a diet of grubs and insects in the jungle. Describing a grub as slimy yet satisfying sums up Timon and Pumbaa's carefree philosophy: food does not need to look appetising to be enjoyable. The clip spread online as a reaction sound for slime videos, mukbangs and other moments where something looks unpleasant but feels strangely good. Its staying power comes from that exact contradiction, which fits almost any gross-out joke without needing the film context.