Monster Krabby Patty
A Monster Krabby Patty is a huge version of the Krabby Patty that is only seen in the episode: "All that Glitters". Squidward says that no one has ordered a Monster Krabby Patty in "ages". When SpongeBob tried to flip the Huge chunk of patty meat, Spat was broken in half, and it was taken to the hospital. When Spat is cured, another fish/customer ordered a Monster Krabby Patty but Spat (SpongeBob’s Spatula) did not break, but instead SpongeBob's arm broke off. It reappeared in The Krabby Patty That Ate Bikini Bottom as Mr. Krabs used one of Sandy's antidotes and caused terror in Bikini Bottom and was part of the plot.
It looks like a gigantic chunk of Krabby Patty meat. It is extremely unlikely that you could fit it in your own mouth.