Moko-tan Is In"もこたんインしたお!" (Moko-tan Is In) is a meme that came from "あ、ぽこたんインしたお!" (Oh, Poko-tan Just Logged IN our LinkShell Community!), an ascii-art meme in 2ch's Online Game Status Board.
See also "Nicopedia: "もこたんインしたお!" and "Maso's 2ch Ascii-Art Illustrations: "あ、ぽこたんインしたお!".
BakassshMoko-tan's carelessly fallen into a pit.Matrix KimeemaruMissWiffShooomHaaHaaShakeOoh, slow, slow.WiffWiffSluck
SluckShakeShakeMissMissWiffDamn youuu!Rather-Lick
LickWhudd