The alt-text is not that snarky description I put for this upload (click and see), but an obscure reference: "If this were SMBC, the alt-text drawing thingy would be a giraffe hooker fluttering her eyelashes." Oh well. I was sorta close. Sorta.
SMBC stands for Saturday Morning Breakfast Cereal, and it's not even listed among "Comics I (meaning Randall Munroe) Enjoy"