Once there was an ugly barnacle. He was so ugly that everyone died. The End!

After Patrick star tells the story of the ugly barnacle, the teenage barnacle cried thinking he was calling her ugly.

Patrick is disheartened by the crying of the mother clam, and is incensed to get to the bottom of this.

Patrick star, coming back to his senses to see a disembodied head and himself covered in purple blood, cheered in confusion

After finding his past self beheaded on his house, Patrick Star deemed that time travel is REALLY confusing.

After witnessing his decapitation in the future in a crystal ball, Patrick decides not to murder squidward

Patrick about to kill squidward but he seen a flash back of him dead, so he deicide not too

squidwards head inflates futher and patrick stabs himself

Patrick commits seppuku under the sea! Squidworth is slightly upset, but I suspect he's figured out about starfish regeneration.