Chortle! I've been known to typ under the influence, from time to time ... grateful for that backspace key :-).
"Typso" is also a Freepism, growing in popularity, which means a typing error that creates real humor, not just an ordinary "typo." "Typso" is a singular-and-plural noun (like "moose"): One typso, two typso, all your typso are belong to us.
I have a ping list for the very best typso I find.
No. Not "meese?"
ahhhhhhhh... I had wondered about that term... you had me in the bewildermentness.