The captions are for what reactions the pictures represent.
Spongebob-goofiest-krusty-krab-blunders-3.jpg|THIS IS NOT A TROLLPASTA
DeluxeKrabbyPatty.jpg|This is boring.
Scaryboy666.exe 3.jpg|ZOMG SCARRED4LYFE!!!!1!!11!1!!!
DEUUEAUGH by cusackanne.png|Oh my freaking god, this isn't even funny.
GODZILLA.jpg|Excuse me while I die of giggling.
DIS IZ BLOOD.jpg|Think you got enough blood?
Babysun.jpg|LOL
Cthulu.jpg|Oh god, am I in the weird part of the wiki now?
Wat2.jpg|'Ey!... Vhat just happn'd?
Finn's reaction.gif|Is it... OH GAWD! THEY WENT THERE!
FAIL.jpg|Serious "Creepypastas" with terrible grammar
c97e5e24af66a54a6f9d1f4c26567656.418x384x1.jpg|reading pastas that doesn't make the slightest of sense.