XKCD, is a webcomic created by American author Randall Munroe. The comic’s tagline describes it as “A webcomic of romance, sarcasm, math, and language”. Munroe states on the comic’s website that the name of the comic is not an initialism but “just a word with no phonetic pronunciation”.
The subject matter of the comic varies from statements on life and love to mathematical, programming, and scientific in-jokes. Some strips feature simple humor or pop-culture references.