This time it's the parrot turn washing us.
Wrote "tibi ... lavo" and can't catch the difference with "te ... lavo".
Tibi is in the dative (indirect objective) case, meaning "to or for you".
Te is in the accusative (direct object) case, so since it's the direct object, you would need to use "te" for the sentence to make sense.
Hope this helps. :-)
Why is "In aqua ego te lavo" disallowed? I know ego isn't required but it is usually allowed in an answer.
Report so they can include it.
Why is "In aqua lavo te" wrong?