Notes:

A memorial dong for Paper Jam Dipper (linked in case the account ever comes back somehow). Forum thread on the topic here.
This is based on this last image he posted in which he said in the tags: "f--- all of you, each and every one of you, except theant, and jack the dipper he's cool too".
The purple vortex is the Fountain of Aging from this Futurama scene from "Teenage Mutant Leela's Hurdles" in which Professor Farnsworth curses Zoidberg as he sinks. The "haters gonna hate" image macro of SpongeBob from "SpongeGuard on Duty" is TheAnt's avatar. The image of Paper Jam Dipper (a close frame to the screencap used in his avatar) and the image of Dipper pouring out a Pitt Cola come from Gravity Falls episode "Double Dipper".
The "Dipper" text is from the cover of the book Dipper's and Mabel's Guide to Mystery and Nonstop Fun!. All other text (aside from the KYM logo) come from the following SpongeBob SquarePants title cards:
• "I'm with Stupid"
• "Good Ol' Whatshisname"
• "Dying for Pie"
• "Breath of Fresh Squidward"
• "The Paper"
• "Jellyfish Jam"
• "The Curse of Bikini Bottom"
• "All That Glitters"
• "House Sittin' for Sandy"
• "The Executive Treatment"
• "The Smoking Peanut"
• "SpongeBob SquarePants vs. The Big One"
• "Mermaid Man and Barnacle Boy VI: The Motion Picture"
• "BlackJack"