verb: (originally Internet slang) To mislead (someone) into following a seemingly innocuous hyperlink, or sometimes a QR code, that leads to a YouTube video of Rick Astley's song "Never Gonna Give You Up".
verb: (by extension) To surprise or trick (someone) into hearing this song.
verb: (by extension) To unexpectedly cause someone to engage with this song through an indirect method, such as through steganography, sheet music, or by inserting the lyrics into an unrelated context.
noun: (Internet slang) An act of or attempt at rickrolling.
verb: Alternative letter-case form of rickroll [(originally Internet slang) To mislead (someone) into following a seemingly innocuous hyperlink, or sometimes a QR code, that leads to a YouTube video of Rick Astley's song "Never Gonna Give You Up".]
noun: Alternative letter-case form of rickroll [(Internet slang) An act of or attempt at rickrolling.]