There May Be Cake (Homestuck/Portal, Dave & GLaDOS)
Artist: rinyula
Fandom: Portal/Homestuck
Pairing/characters: Dave & GLaDOS
Rating: PG
Warnings: Very minor amounts of blood
Prompt/challenge you're answering: GLaDOS & Dave, "Let's try that again"
A/N: Background texture ripped directly from this screenshot.
( Let's try that again. )